madgraph / madevent
DESCRIPTION
MadGraph / MadEvent. Workshop 1 Renormalization / Callibration. 5. 5. Goals. 8. RoadMap. Motivation, Introduction Hadronic Event Generation Analysis and Outlook. A Great Time In Physics. 9. A Great Time In Physics. 11. The Challenge. 1 / 1,000,000,000. 14. KEY. 16. - PowerPoint PPT PresentationTRANSCRIPT
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Cargese Summer School July 2010 Tim Stelzer
MadGraph/MadEvent
5
Workshop 1Renormalization / Callibration
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Cargese Summer School July 2010 Tim Stelzer5
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Cargese Summer School July 2010 Tim Stelzer
Goals
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Cargese Summer School July 2010 Tim Stelzer
RoadMap
• Motivation, Introduction
• Hadronic Event Generation
• Analysis and Outlook
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Cargese Summer School July 2010 Tim Stelzer
A Great Time In Physics
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Cargese Summer School July 2010 Tim Stelzer
A Great Time In Physics
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Cargese Summer School July 2010 Tim Stelzer
The Challenge
1 / 1,000,000,000
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Cargese Summer School July 2010 Tim Stelzer
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Cargese Summer School July 2010 Tim Stelzer
KEY
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Cargese Summer School July 2010 Tim Stelzer
Form teams of 3
20
At least 1 computerAt most 2 computers
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Cargese Summer School July 2010 Tim Stelzer
Discoveries at hadron colliders(adapted from MLM)
Peak (easy) Shape (medium) Rate (hard)
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Cargese Summer School July 2010 Tim Stelzer
SuperSymmetry at LHC
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Cargese Summer School July 2010 Tim Stelzer
New MC shows much harder!
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Cargese Summer School July 2010 Tim Stelzer
Discovery Path @ LHC
• Rediscover Standard Model
• Identify excess
• Identify nature of excess
• Repeat
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Cargese Summer School July 2010 Tim Stelzer
Standard Model
ud
d
Matt
erLe
pton
s
Qua
rks
Forc
e Ca
rrie
rs
e-
n
du
d
u
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2E mc=
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Cargese Summer School July 2010 Tim Stelzer
(3) (2) (1)SU SU U´ ´Details
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Cargese Summer School July 2010 Tim Stelzer
Perturbation Theory
dMs
2||21
eeeTM dtHi I ||
...||21|| 2
intint eeHeeHM
0IH »
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Cargese Summer School July 2010 Tim Stelzer
Example: e+e- → +-
• Scattering cross section
• Feynman Diagrams
dMs
2||21
...|| int eeHM
( )M v e ( )iq ( )v e2
igp
n( )( ) ( )u iq un
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Cargese Summer School July 2010 Tim Stelzer
QED
Z QED
W+- QED
g QCD
h QED(m)
Feynman Rules!
qq l l
qqg
W W
qqZ llZ
qq W l Wn
ggg
W W Z
W W h qqh llh
gggg
WWWW
Partial list from SMZZh
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Cargese Summer School July 2010 Tim Stelzer
• These are basic building blocks, combine to form “allowed” diagrams– e.g. u u~ -> t t~
• Draw Feynman diagrams:– gg -> tt~ (gg -> bb~ e+ ve j j )– gg -> tt~h
• Determine “order” for each diagram
Feynman Rules!
Order is QCD2
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QCDg
QED(m)h
QEDW
QEDZ
QED
QCDg
QED(m)h
QEDW
QEDZ
QEDqq l l
qqg
W W
qqZ llZ
qq W l Wn
ggg
W W Z
W W h qqh llh
gggg
WWWW
ZZh
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Cargese Summer School July 2010 Tim Stelzer50
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Cargese Summer School July 2010 Tim Stelzer
Register
60
http://madgraph.hep.uiuc.edu/