! File: main07.cmnd ! This file contains commands to be read in for a Pythia8 run. ! Lines not beginning with a letter or digit are comments. ! Names are case-insensitive - but spellings-sensitive! ! The changes here are illustrative, not always physics-motivated. ! 1) Settings that could be used in a main program, if desired. Main:numberOfEvents = 1000 ! number of events to generate Main:numberToList = 1 ! number of events to print Main:timesToShow = 20 ! show how far along run is this many times Main:timesAllowErrors = 10 ! abort run after this many flawed events Main:showChangedSettings = on ! print changed flags/modes/parameters #Main:showAllSettings = on ! print all flags/modes/parameters #Main:showChangedParticleData = on ! print changed particle and decay data #Main:showAllParticleData = on ! print all particle and decay data Main:showAllStatistics = on ! more statistics on multiple interactions ! 2) Beam parameter settings. Values below agree with default ones. Beams:idA = 2212 ! first beam, p = 2212, pbar = -2212 Beams:idB = 2212 ! second beam, p = 2212, pbar = -2212 Beams:eCM = 14000. ! CM energy of collision ! 3) Settings for hard-process generation internal to Pythia8. SoftQCD:minbias = on ! minimum bias QCD processes #HardQCD:all = on ! QCD jet production #PhaseSpace:pTHatMin = 20. ! minimum pT in hard process ! 4) Switch off some key components of the simulation, for comparisons. #PartonLevel:all = off ! stop after hard process #PartonLevel:MI = off ! no multiple interactions #PartonLevel:ISR = off ! no initial-state radiation #PartonLevel:FSR = off ! no final-state radiation #HadronLevel:Hadronize = off ! no hadronization #HadronLevel:Decay = off ! no decays ! 5) Multiple interactions and impact parameter picture. MultipleInteractions:pT0Ref = 2. MultipleInteractions:ecmRef = 1960. MultipleInteractions:ecmPow = 0.16 MultipleInteractions:pTmin = 0.2 MultipleInteractions:bProfile = 2 #MultipleInteractions:coreRadius = 0.4 #MultipleInteractions:coreFraction = 0.5 MultipleInteractions:expPow = 1. ! 6) Switch off checks. #Check:event = off