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Feynman Rules!

Feynman Rules!. Draw Feynman diagrams for the processes below using the base interactions shown gg -> tt~ gg -> tt~h gg -> tt~bb~. Check at http://madgraph.hep.uiuc.edu/. Sub Process Identification. Note…. Proton includes up, down, strange and charm quarks, and also gluons

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Feynman Rules!

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  1. Feynman Rules! • Draw Feynman diagrams for the processes below using the base interactions shown • gg -> tt~ • gg -> tt~h • gg -> tt~bb~ Check at http://madgraph.hep.uiuc.edu/

  2. Sub Process Identification • Note…. Proton includes up, down, strange and charm quarks, and also gluons • List processes for signal pp > h > tt~bb~ • e.g. uu~ > h > tt~ bb~ • List process for background pp > ttbb • e.g. uu~ > tt~bb~ • List process for reducible background pp>ttjj • e.g. uu~ > tt~gg • Check answers at http://madgraph.hep.uiuc.edu/ use HEFT theory to get gg-> h diagrams for signal

  3. Play @ madgraph.hep.uiuc.edu • Generate SubProcesses + Diagrams • Use HEFT for model to get gg>h • Generate Parton Level Plots • Username = Angels • Password = D _ _ _ _ _ • Generate Detector Level Plots

  4. Final Project • Good News….we have discovered 3 new particles at the LHC (Z’, H, W+’) Your job is to determine their mass using the plots provided. • Go to http://madgraph.hep.uiuc.edu/ choose wiki/docs---Communications---Lectures/Tutorials---2008 CERN Summer School. (or http://cp3wks05.fynu.ucl.ac.be/twiki/bin/view/Physics/CernSummerSchool08)

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