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# The following generates p p -> t t~ tau+ tau- (run){ # ATLAS general parameters MASS[6]=172.5 MASS[23]=91.1876 MASS[24]=80.399 WIDTH[23]=2.4952 WIDTH[24]=2.085 SIN2THETAW=0.23113 MAX_PROPER_LIFETIME=10.0 MI_HANDLER=Amisic # Events to generate? EVENTS = 1000 # Output fully showered events in HEPMC format, with this filename prefix HEPMC2_GENEVENT_OUTPUT = ttll-hi # Output "short" (initial parton level) events in HEPMC format, with this filename prefix HEPMC2_GENEVENT_OUTPUT = ttll-hi # take tau mass into account MASSIVE[15] = 1 }(run) (beam){ # beams are protons at 7 TeV each BEAM_1 = 2212; BEAM_ENERGY_1 = 7000; BEAM_2 = 2212; BEAM_ENERGY_2 = 7000; }(beam) (processes){ # collide light quarks/gluons (93) to top, antitop, tau, antitau, and up to two additional light quarks/gluons Process 93 93 -> 6[a] -6[b] 15 -15 93{2}; # on shell top -> W b DecayOS 6[a] -> 5 24; DecayOS -6[b] -> -5 -24; # matrix element/showering match with CKKW prescription CKKW sqr(30/E_CMS) # enhance rates for final states with seven and eight partons - events will be weighted Enhance_Factor 2.0 {7} Enhance_Factor 5.0 {8} # Factorization/renormalization scales: loose prescription for high multiplicity states Scales LOOSE_METS{MU_F2}{MU_R2} {8} # Allow larger error for high multiplicity states Integration_Error 0.1 {7,8} End process; }(processes) (selector){ # Dilepton mass between 7 GeV and CM energy Mass 15 -15 7.0 E_CMS }(selector) (mi){ # Multiple interactions on MI_HANDLER = Amisic # None or Amisic }(mi) |
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