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
Cargese Summer School July 2010 Tim Stelzer
MadGraph/MadEvent
5
Workshop 1Renormalization / Callibration
Cargese Summer School July 2010 Tim Stelzer5
Cargese Summer School July 2010 Tim Stelzer
Goals
8
Cargese Summer School July 2010 Tim Stelzer
RoadMap
• Motivation, Introduction
• Hadronic Event Generation
• Analysis and Outlook
Cargese Summer School July 2010 Tim Stelzer
A Great Time In Physics
9
Cargese Summer School July 2010 Tim Stelzer
A Great Time In Physics
11
Cargese Summer School July 2010 Tim Stelzer
The Challenge
1 / 1,000,000,000
14
Cargese Summer School July 2010 Tim Stelzer
Cargese Summer School July 2010 Tim Stelzer
KEY
16
Cargese Summer School July 2010 Tim Stelzer
Form teams of 3
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At least 1 computerAt most 2 computers
Cargese Summer School July 2010 Tim Stelzer
Discoveries at hadron colliders(adapted from MLM)
Peak (easy) Shape (medium) Rate (hard)
22
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!
24
Cargese Summer School July 2010 Tim Stelzer
Discovery Path @ LHC
• Rediscover Standard Model
• Identify excess
• Identify nature of excess
• Repeat
26
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
30
2E mc=
Cargese Summer School July 2010 Tim Stelzer
(3) (2) (1)SU SU U´ ´Details
32
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
22
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
45
Cargese Summer School July 2010 Tim Stelzer50
Cargese Summer School July 2010 Tim Stelzer
Register
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http://madgraph.hep.uiuc.edu/