Changes between Version 1 and Version 2 of NumSHEP2011
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- Apr 6, 2012, 4:33:02 PM (13 years ago)
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NumSHEP2011
v1 v2 15 15 16 16 * [http://www.hep.phy.cam.ac.uk/theory/webber/QCDbook.html QCD and Collider Physics] by Keith Ellis, James Stirling, Bryan Webber (Cambridge Monographs, 1996). 17 * [ :FurtherReading:Perspectives on LHC physics, Ed. by G. Kane and A. Pierce].17 * [wiki:FurtherReading Perspectives on LHC physics, Ed. by G. Kane and A. Pierce]. 18 18 * [http://home.thep.lu.se/~torbjorn/pythia/lutp0613man2.pdf Pythia 6 Physics and Manual] (excellent introduction to event generation, parton showers and hadronization). 19 19 === Basic exercises 1: Familiarize with Software.MadGraph === … … 22 22 * Register with a valid e-mail address 23 23 * Feynman diagrams. Generate a few processes (with different QED + QCD couplings) trying to guess which diagrams appear: 24 * uu~ >tt~25 * gg >tt~26 * gg >tt~h (in SM and HEFT)27 * uu~ >tt~bb~24 * uu~>tt~ 25 * gg>tt~ 26 * gg>tt~h (in SM and HEFT) 27 * uu~>tt~bb~ 28 28 * Subprocess identification. List all subprocesses contributing to: 29 * pp >l+vljj30 * pp >tt~bb~31 * pp >tt~jj29 * pp>l+vljj 30 * pp>tt~bb~ 31 * pp>tt~jj 32 32 * Look at the new physics models and check the particle and interactions content. 33 33 * Advanced: Download the MG/ME package and play with the standalone version. … … 39 39 40 40 Example processes: 41 * ttbar production: pp >tt~, QED=042 * W production: pp >l+vl43 * Z/gamma* production: pp >e+e-44 * g g > (H >e+ ve mu- vm~) (in HEFT model)45 * p p > (W+>e+ ve) (W- >mu- vm~) (important background to previous process)41 * ttbar production: pp > tt~, QED=0 42 * W production: pp > l+vl 43 * Z/gamma* production: pp > e+e- 44 * g g > (H > e+ ve mu- vm~) (in HEFT model) 45 * p p > (W+>e+ ve) (W- > mu- vm~) (important background to previous process) 46 46 === Advanced exercises 1: The full simulation chain and advanced features === 47 47 … … 52 52 53 53 Study SM Higgs production at the LHC. Choose a channel and investigate signal and background, using either of the packages above: 54 1. The 2 lepton + missing Et final state: %$ pp \to H\to W^+ W^- \to e^- \bar \nu_e \mu^+ \nu_\mu $%54 1. The 2 lepton + missing Et final state: $ pp \to H\to W^+ W^- \to e^- \bar \nu_e \mu^+ \nu_\mu $ 55 55 1. 56 56 * Signal … … 60 60 * Events: [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/hww-background.lhe.gz Parton Level] <span style="color: #000000;">|| </span>[http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/hww-background.lhco.gz Detector Level] 61 61 * Plots: [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/hww-background-lhe.pdf Parton Level] <span style="color: #000000;">|| </span>[http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/hww-background-lhco.pdf Detector Level] 62 1. Top associated production %$pp \to t\bar tH$% with %$H \to b \bar b$%62 1. Top associated production $pp \to t\bar tH$ with $H \to b \bar b$ 63 63 * Signal + Background samples: 64 64 * Events: [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/ttbb.lhe.gz Parton Level] || [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/ttbb.lhco.gz Detector Level] … … 82 82 83 83 84