Sarah Eno 1

MD Contribution to Simulation and W WidthMass

Sarah Eno

30 Aug 2005

DOE Review

Sarah Eno 2

SimulationMD has made major contributions to simulation code for Dzero

Sarah Eno (professor)

Shuichi Kunori (Research Scientist)

Greg Graham (former postdoc now FNAL computing division)

Marco Verzzochi (former postdoc now Wilson Fellow)

Junjie Zhu (former student now postdoc at Stony Brook)

Lei Wang (current student)

Matt Wetstein (current student)

Christie Chew (former undergrad)

Sarah Eno 3

Major Projects

bull Develop and main responsibility for fast simulation code (Sarah Greg Junjie Marco)

bull Developing and debugging ldquod0raw2simrdquo (Sarah Christie)

bull initial C++ ldquowrapperrdquo for GEANT-3 based simulation and general GEANT expert (Shuichi)

bull code to test and validate new releases of full simulation (Lei)

bull Sarah was co-head of the simulation group from 2003-2005

Sarah Eno 4

Last YearFull simulation Sarah worked with the developers to implement the following changes Lei found bugs for them with his certification package

bullMartijn Mulders of FNAL updated the muon geometrybullSudeshna Banerjee of the Tata institute updated the SMT cable geometry These changes also had to be coordinated with the geometry used in the reconstructionbullSahal Yacoob of Northwestern updated the beam pipe geometrybullMike Hildreth of Notre Dame updated the geometry of the fiber trackerbullAlice Bean of the University of Kansas updated the noise and cross-talk simulation of the silicon tracker

Sarah Eno 5

D0Raw2Sim

Process real zero bias data to put them into a format so that they can be overlaid (via pileup which is linked into D0Sim) onto signal MC

Benefits better simulation of noise (especially in calorimeter) and of the soft physics of the pileup interactions

Problems Overlaying data onto MC is a problem for code that has if(MC) Part of the event wants the MC settings part the data Our code has a lot of this

bull geometry

bull time to distance relations

bull etc

Non-trivial

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 2

SimulationMD has made major contributions to simulation code for Dzero

Sarah Eno (professor)

Shuichi Kunori (Research Scientist)

Greg Graham (former postdoc now FNAL computing division)

Marco Verzzochi (former postdoc now Wilson Fellow)

Junjie Zhu (former student now postdoc at Stony Brook)

Lei Wang (current student)

Matt Wetstein (current student)

Christie Chew (former undergrad)

Sarah Eno 3

Major Projects

bull Develop and main responsibility for fast simulation code (Sarah Greg Junjie Marco)

bull Developing and debugging ldquod0raw2simrdquo (Sarah Christie)

bull initial C++ ldquowrapperrdquo for GEANT-3 based simulation and general GEANT expert (Shuichi)

bull code to test and validate new releases of full simulation (Lei)

bull Sarah was co-head of the simulation group from 2003-2005

Sarah Eno 4

Last YearFull simulation Sarah worked with the developers to implement the following changes Lei found bugs for them with his certification package

bullMartijn Mulders of FNAL updated the muon geometrybullSudeshna Banerjee of the Tata institute updated the SMT cable geometry These changes also had to be coordinated with the geometry used in the reconstructionbullSahal Yacoob of Northwestern updated the beam pipe geometrybullMike Hildreth of Notre Dame updated the geometry of the fiber trackerbullAlice Bean of the University of Kansas updated the noise and cross-talk simulation of the silicon tracker

Sarah Eno 5

D0Raw2Sim

Process real zero bias data to put them into a format so that they can be overlaid (via pileup which is linked into D0Sim) onto signal MC

Benefits better simulation of noise (especially in calorimeter) and of the soft physics of the pileup interactions

Problems Overlaying data onto MC is a problem for code that has if(MC) Part of the event wants the MC settings part the data Our code has a lot of this

bull geometry

bull time to distance relations

bull etc

Non-trivial

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 3

Major Projects

bull Develop and main responsibility for fast simulation code (Sarah Greg Junjie Marco)

bull Developing and debugging ldquod0raw2simrdquo (Sarah Christie)

bull initial C++ ldquowrapperrdquo for GEANT-3 based simulation and general GEANT expert (Shuichi)

bull code to test and validate new releases of full simulation (Lei)

bull Sarah was co-head of the simulation group from 2003-2005

Sarah Eno 4

Last YearFull simulation Sarah worked with the developers to implement the following changes Lei found bugs for them with his certification package

bullMartijn Mulders of FNAL updated the muon geometrybullSudeshna Banerjee of the Tata institute updated the SMT cable geometry These changes also had to be coordinated with the geometry used in the reconstructionbullSahal Yacoob of Northwestern updated the beam pipe geometrybullMike Hildreth of Notre Dame updated the geometry of the fiber trackerbullAlice Bean of the University of Kansas updated the noise and cross-talk simulation of the silicon tracker

Sarah Eno 5

D0Raw2Sim

Process real zero bias data to put them into a format so that they can be overlaid (via pileup which is linked into D0Sim) onto signal MC

Benefits better simulation of noise (especially in calorimeter) and of the soft physics of the pileup interactions

Problems Overlaying data onto MC is a problem for code that has if(MC) Part of the event wants the MC settings part the data Our code has a lot of this

bull geometry

bull time to distance relations

bull etc

Non-trivial

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 4

Last YearFull simulation Sarah worked with the developers to implement the following changes Lei found bugs for them with his certification package

bullMartijn Mulders of FNAL updated the muon geometrybullSudeshna Banerjee of the Tata institute updated the SMT cable geometry These changes also had to be coordinated with the geometry used in the reconstructionbullSahal Yacoob of Northwestern updated the beam pipe geometrybullMike Hildreth of Notre Dame updated the geometry of the fiber trackerbullAlice Bean of the University of Kansas updated the noise and cross-talk simulation of the silicon tracker

Sarah Eno 5

D0Raw2Sim

Process real zero bias data to put them into a format so that they can be overlaid (via pileup which is linked into D0Sim) onto signal MC

Benefits better simulation of noise (especially in calorimeter) and of the soft physics of the pileup interactions

Problems Overlaying data onto MC is a problem for code that has if(MC) Part of the event wants the MC settings part the data Our code has a lot of this

bull geometry

bull time to distance relations

bull etc

Non-trivial

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 5

D0Raw2Sim

Process real zero bias data to put them into a format so that they can be overlaid (via pileup which is linked into D0Sim) onto signal MC

Benefits better simulation of noise (especially in calorimeter) and of the soft physics of the pileup interactions

Problems Overlaying data onto MC is a problem for code that has if(MC) Part of the event wants the MC settings part the data Our code has a lot of this

bull geometry

bull time to distance relations

bull etc

Non-trivial

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 6

Last Year

Sarah spent a lot of time with Mike Hildreth debugging the code for the fiber tracker and some time with Alex Melnitchouk (Mississippi) and Avto Kharchilava (Buffalo) debugging the SMT code

Sarah worked with Bob Hirosky (Virginia) to develop tools for processing the zero bias data needed for this project

Results from 2 types of tests

bull Is it doing a good job of translating from data to MC format How badly are the if(MC) statements hurting the result

bull How does it compare with the traditional method of doing pileup (since that has its own problems)

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 7

Test of if(MC) problemPath 1 (black) process zero bias data with reco + recocert (data rcps)

Path 2 (red) process zero bias data through d0raw2sim and overlayed onto single neutrino events and process with reco+recocert (MC rcps)

Results should be IDENTICAL Remember d0raw2sim just translates from one format to another Nothing more

However remember this shows how the pileup is messed up The hits from the signal will be handled correctly (since they really are MC and I processed using the MC rcprsquos)

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 8

CalorimeterBlack no d0raw2sim Red d0rawsim

Sarah Eno

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 9

Fast SimulationSarah (with Lee Lueking of FNAL) wrote the Run I fast simulation

Sarah (with Greg Graham) wrote the Run II fast simulation

Fast simulation is used for almost all EWK results and some NP results Top group is trying to adapt it for their needs

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 10

Fast Simulation

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 11

W WidthMass Analysis

Marco Verzocchi (former postdoc) head of D0 EWK group from 2002 to 2004

Sarah and Marco head of W mass group from 2002 to 2005

Junjie Zhu (former student) completed thesis on W mass in October 2004 (approved for conferences Aug 2004)

JunjieMarco also made major contributions to the WZ cross sections to electrons analysis

Matt Wetstein (current student) working on W mass thesis

Michiel Sanders (current postdoc) tracking scale and mass in the muon channel

Sarah on EB for cross sections analysis

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 12

W Z Cross Sections

candN

A L dt

Junjie Marco

Thesis of John Gardener Kansas

Junjie made major contributionscross checks to code that calculates the acceptance fast Monte Carlo efficiency calculations backgrounds resolutions

Marco did most of the work on data sample preparation luminosity calculation

bull Preliminary to all WZ analyses

bull Test of QCD

bull can be used to extract an indirect measurement of the W width

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 13

WZ Cross Sections

177 pb-1

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 14

WZ Cross Sections

Close to publication

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 15

Indirect Width

Rpp W B W e

pp Z B Z ee

W

Z

Z

Z ee

W l

W

( ) ( )

( ) ( )

( )

( )

( )

( )

( )

( )

theory LEP

measure

extract

(MD also did the Run I measurement)

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 16

Indirect

Run II

25 measurement in Run I

2nd most precise measurement from the Run I data

Run II

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 17

W MassWidth

MW2

(MZ2 )

2GF

1(1 (MW

2 MZ2 ))

1

(1 r)

r~ln MH W W

H

W

r~Mt2 W W

t

One of the best ways we have to constraint the Higgs mass before its discovery

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 18

Wrsquos

LEP EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 19

MassHighest precision measurement will come from the Tevatronrsquos Collider

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 20

W Width Why32

1 2 3 221 2

1 4 3

( 2)6

1

12 2 sin

WC FW f f f f

C Ff fW

MV N G

V N G

13WM

Tree level

Not so useful for Higgs physics but there is a way of doing the measurement that is a useful step towards the mass measurement

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 21

W WidthTechnique same as W mass measurement but has large stat error

Same data sample MC as cross section analysis

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 22

W Width

DPF 2005Have not published yet becausehellip

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 23

Calorimeter Calibration33 GeV 22 GeV

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 24

Calorimeter Calibration

Two Aspects of Calibration Electronics Calibration Using Pulsers

Nonlinearity corrections for SCAs (switched capacitor arrays)Gain-correctionsPedestals baseline subtraction (and their stability in time)

Calibration of the Physical DeviceNonuniformities in the detector construction In Run II with shorter integration time and lower readout voltages we are more sensitive to these effectsNot enough Zrarree to calibrate out these effects on sufficiently small granularitiesInstead we look to more abundant samples to improve the statistical power of ourcalibration

MD+ Jan Stark

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 25

MethodWe require Emin gt Etrigger2) Count the number of events in each tower3) Adjust the energy cut Ei for each tower until the occupancy of the towerequals the average occupancy for the phi ring We expect approximatephi symmetry4) Assuming a proportional energy response our towerlevelcalibrationconstants are given by a single multiplicative constant αi = EiEmin

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 26

Calorimeter Calibration

Data Sample Level 1 CEM(16) EM trigger towers with ETgt6 GeV No Level 2 Level 3 Precision towers with ET gt8 GeV matched to the L1 trigger No bias from clustering at L3 Prescales were adjusted to saturate the DAQ We found that this would provide sufficient data in one store to intercalibrate CC towers to within 1 August 2004 we had 20 hours of beamtimecollected 55 million events

trigger is now a part of normal physics running

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 27

Calibration Constants

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 28

Calorimeter Calibration

335 GeV

293 GeV

299 GeVHCAL is now being calibrated using same method (different people)

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 29

W Mass with Muons

Muon and electron channels are complimentarybullElectron channel is mostly Calorimeter basedbullMuon channel is mostly Tracking based

Partly independent systematicsbullAdditional statistical powerbullCaveat momentum resolution of tracking is not as good as calorimeter

(M Sanders)

Unfortunately the Fundamentals need work first here as well

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 30

Tracking Scale

Muon momentum measured by central tracking detectors

Need to understand momentum measurement of tracking detectors

bull Magnetic fieldbull Passive material inside the detector energy lossbull Linearity momentum resolution

Final momentum scale will be determined with Z eventsUse large samples of Js and Kshortrsquoss to study details

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 31

Problems

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 32

Tracking amp Material

Energy loss of a muon in material is mostly through ionization and atomic excitation described by Bethe-Bloch formula1048576

bullStudy additional correction needed as function of energy -gt add the correct amount of material to the track reconstructionbull see if this improves our understanding

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 33

Tracking

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 34

Tracking amp Material

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 35

Z PT

Important input to W mass

Test of QCD

Complement to TooleYan analysis

Lei Wangrsquos thesis work

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 36

Z PT

Test of method using MC

Lei is first student in WZ group to look at the new ldquoP17rdquo data

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 37

ZZ ProductionThesis topic of Chad Jarvis

Important background for Higgs Production

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 38

ZZ

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 39

ZZ

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG

Sarah Eno 40

TeV EWWGIn the spring of 2003 Sarah Eno Martin Grunewald (Dublin) Ashutosh Kotwal (Duke) and Michael Schmitt (Northwestern) founded the Tevatron Electroweak Working Group modeled on the LEP EWWG

Goal provide prompt correct preliminary combinations of EWK results from the Tevatron (including top mass) Encourage communication between CDF and D0 on theoretical issues error catagories etc

• MD Contribution to Simulation and W WidthMass
• Simulation
• Major Projects
• Last Year
• D0Raw2Sim
• Slide 6
• Test of if(MC) problem
• Calorimeter
• Fast Simulation
• Slide 10
• W WidthMass Analysis
• W Z Cross Sections
• WZ Cross Sections
• Slide 14
• Indirect Width
• Indirect
• W MassWidth
• Wrsquos
• Mass
• W Width Why
• W Width
• Slide 22
• Calorimeter Calibration
• Slide 24
• Method
• Slide 26
• Calibration Constants
• Slide 28
• W Mass with Muons
• Tracking Scale
• Problems
• Tracking amp Material
• Tracking
• Slide 34
• Z PT
• Z PT
• ZZ Production
• ZZ
• Slide 39
• TeV EWWG