High Energy High Energy PhysicsPhysics

at theat the

University of University of OregonOregon • Accelerator-basedAccelerator-based

• Non-acceleratorNon-accelerator• TheoryTheory

Standard ModelStandard Model

What is the universe What is the universe made of?made of?

How does it interact?How does it interact?

Standard Model veryStandard Model verysuccessful, but incomplete…successful, but incomplete…

Outstanding QuestionsOutstanding Questions

What causes mass?What causes mass? What breaks EW symmetry?What breaks EW symmetry? Are there additional Are there additional

symmetries to nature?symmetries to nature? Are there extra dimensions?Are there extra dimensions? Why matter (not antimatter)?Why matter (not antimatter)? What is dark matter?What is dark matter? And many more…And many more…

Experimental HEP FacultyExperimental HEP Faculty

Jim BrauJim Brau Ray FreyRay Frey

David StromDavid Strom Eric TorrenceEric Torrence

Theoretical HEP FacultyTheoretical HEP Faculty

Nilendra DeshpandeNilendra Deshpande

Dave SoperDave Soper Stephen HsuStephen Hsu

HEP Accelerator LabsHEP Accelerator Labs

BaBarBaBarSLDSLD

NuTevNuTev

OpalOpal

Truly global fieldTruly global fieldUofO well connectedUofO well connected

Oregon Experiments (Finishing)Oregon Experiments (Finishing)

Oregon Experiments (Running)Oregon Experiments (Running)

High LuminosityHigh LuminosityAsymmetric eAsymmetric e++ee--

B-FactoryB-Factory(SLAC)(SLAC)

Gravity WaveGravity WaveInterferometerInterferometer(Hanford)(Hanford)

1 TeV Linear Collider (Future)1 TeV Linear Collider (Future)

ee++ee-- -> HZ -> HZPrecise Higgs studiesPrecise Higgs studiesSupersymmetrySupersymmetryExtra dimensions or ???Extra dimensions or ???Precision electroweakPrecision electroweakInteresting for new studentsInteresting for new students

U Oregon groupU Oregon groupis is VERYVERY involved involved

Oregon LC Involvement Oregon LC Involvement (ALCPG)(ALCPG)

BrauBrau US exec committee US exec committee

co-chairco-chair Vertex Detectors Vertex Detectors

convenerconvener StromStrom

New Physics New Physics convenerconvener

CalorimetryCalorimetry

FreyFrey Calorimetry Calorimetry

convenerconvener

TorrenceTorrence Beam Beam

Instrumentation Instrumentation convenorconvenor

Oregon Students + PostDocsOregon Students + PostDocs SLACSLAC

Jan Strube (BaBar)Jan Strube (BaBar) Olya Igonkina (BaBar postdoc)Olya Igonkina (BaBar postdoc) Minghui Lu (BaBar postdoc)Minghui Lu (BaBar postdoc) Nick Sinev (senior scientist)Nick Sinev (senior scientist)

HanfordHanford Masahiro Ito (LIGO/UO)Masahiro Ito (LIGO/UO) Rauha Rahkola (LIGO/UO)Rauha Rahkola (LIGO/UO) Robert Schofield (LIGO postdoc)Robert Schofield (LIGO postdoc)

OregonOregon Dave Mason (NuTev)Dave Mason (NuTev) Sean Walston (SLD)Sean Walston (SLD) Chris Potter (BaBar)Chris Potter (BaBar) Isabel Leonor (LIGO postdoc)Isabel Leonor (LIGO postdoc)

Newer StudentsNewer Students Nick BlountNick Blount Jeffrey EarlyJeffrey Early Brian StubbsBrian Stubbs RahmatRahmat Eric FitzgeraldEric Fitzgerald

Stable funding (DOE/NSF), serious students welcomeStable funding (DOE/NSF), serious students welcome

BaBar PhysicsBaBar Physics High LuminosityHigh Luminosity Asymmetric eAsymmetric e++ee--

200M BB, 200M BB, since sinceNov 99, double by 06!Nov 99, double by 06!

Measure CP violationMeasure CP violationMatter-antimatterMatter-antimatter

Rare B decaysRare B decays=> New physics=> New physics

Tau lepton physicsTau lepton physics

CP Violation in BCP Violation in B00 decays decays

Fully reconstruct one Fully reconstruct one BB00 (or B (or B00) as a tag) as a tag

Reconstruct second B Reconstruct second B in CP eigenstatein CP eigenstate (J/ (J/S S vs. J/vs. J/LL))

Time dependence Time dependence => CP violation=> CP violation

ee-- (9 GeV) (9 GeV) ee++ (3 GeV) (3 GeV)

= 0.56= 0.56

BBtagtag BBCPCP

zz ~250 ~250 mm

Rare B DecaysRare B Decays

Forbidden in SM Forbidden in SM at tree levelat tree level

Highly sensitive to new Highly sensitive to new physics (eg: SUSY)physics (eg: SUSY)

Measure branching Measure branching fractions to 10fractions to 10-6-6 or better or better

Many channels, good Many channels, good thesis topics…thesis topics…

b -> s b -> s (penguins)(penguins)

BB00 -> -> (Chris Potter Thesis)(Chris Potter Thesis)

Rare Tau DecaysRare Tau Decays

Neutrino data indicates Neutrino data indicates Lepton Flavor Lepton Flavor Violation: Violation: <=> <=>

Search for charged Search for charged versionversion

Signature: 3 charged Signature: 3 charged leptons with no leptons with no missing momentummissing momentum

World’s best limits: B(World’s best limits: B(->lll) < (1-3) x10->lll) < (1-3) x10-7-7 (90% CL) (90% CL)

Local ActivitiesLocal Activities

BaBar RPC TeststandBaBar RPC TeststandBeginning Grad and Beginning Grad and

UG detector workUG detector work NLC Calorimeter NLC Calorimeter

DevelopmentDevelopment NLC Physics StudiesNLC Physics Studies NLC Beam NLC Beam

Instrumentation Instrumentation PrototypesPrototypes

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SiW Calorimetry for LCSiW Calorimetry for LC•Large Area (6” Si)Large Area (6” Si)•5 mm hex pixel5 mm hex pixel•Integrated ReadoutIntegrated Readout•Cheap(ish)Cheap(ish)

HEP Grad Student EducationHEP Grad Student Education Quantum MechanicsQuantum Mechanics RelativityRelativity ComputingComputing ProgrammingProgramming Analysis SkillsAnalysis Skills Advanced StatisticsAdvanced Statistics Simulation MethodsSimulation Methods Hardware TechniquesHardware Techniques ElectronicsElectronics Presentation SkillsPresentation Skills Collaboration SkillsCollaboration Skills

Very Broad EducationVery Broad Education Useful in ‘real world’Useful in ‘real world’ Can follow interestsCan follow interests ‘‘Apprentice’ system Apprentice’ system

Greatly rewards motivated individualsGreatly rewards motivated individuals

LHC

HEP Accelerator TimelineHEP Accelerator Timeline

Neutrino experimentsNeutrino experiments Particle astrophysicsParticle astrophysics LIGOLIGO

20002000 20052005 20102010

SLDSLD

OPALOPAL

BaBar/Belle

Tevatron IITevatron II

NLC?

20152015

The future of High EnergyThe future of High EnergyParticle Physics is brightParticle Physics is bright