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Exploring the Frontier of Hadronic Event Generation: Goals and Discoveries in Physics

This workshop focuses on leveraging MadGraph/MadEvent for hadronic event generation and highlights the importance of collaboration in computational physics. Participants will form teams of three, with each team utilizing at least one computer to tackle challenges related to discoveries at hadron colliders. The program emphasizes the rediscovery of the Standard Model, identification of excesses, and the nature of new particles through innovative approaches like Supersymmetry at the LHC. Attendees will engage in practical exercises, learn key Feynman diagrams, and apply perturbation theory to analyze scattering processes.

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Exploring the Frontier of Hadronic Event Generation: Goals and Discoveries in Physics

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Presentation Transcript

  1. MadGraph/MadEvent Workshop 1 Renormalization / Callibration 5

  2. 5

  3. Goals 8

  4. RoadMap • Motivation, Introduction • Hadronic Event Generation • Analysis and Outlook

  5. A Great Time In Physics 9

  6. A Great Time In Physics 11

  7. The Challenge 1 / 1,000,000,000 14

  8. KEY 16

  9. Form teams of 3 At least 1 computer At most 2 computers 20

  10. Discoveries at hadron colliders(adapted from MLM) Peak (easy) Shape (medium) Rate (hard) 22

  11. SuperSymmetry at LHC 23

  12. New MC shows much harder! 24

  13. Discovery Path @ LHC • Rediscover Standard Model • Identify excess • Identify nature of excess • Repeat 26

  14. Standard Model d u d Matter Leptons Quarks Force Carriers d u u e- d n 30

  15. Details 32

  16. Perturbation Theory 34

  17. Example: e+e- → m+m- Scattering cross section Feynman Diagrams 37

  18. Feynman Rules! Partial list from SM 38

  19. 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 45

  20. 50

  21. Register http://madgraph.hep.uiuc.edu/ 60

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