! File: main06.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 = 20000 ! 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 ! 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 process generation internal to Pythia8. SoftQCD:elastic = on ! elastic scattering SoftQCD:singleDiffractive = on ! single diffractive scattering SoftQCD:doubleDiffractive = on ! double diffractive scattering ! 4) Optionally switch on hand-set cross section and Coulomb term.. SigmaTotal:setOwn = on ! set your own total/elastic/diffractive sigma SigmaTotal:sigmaTot = 106. ! total cross section (excluding Coulomb) SigmaTotal:sigmaXX = 3. ! reduce double diffractive cross section SigmaElastic:setOwn = on ! suboption for Coulomb term in elastic SigmaElastic:tAbsMin = 4e-5 ! divergence requires lower cutoff ! 5) Switch off some key components of the simulation, for comparisons. #PartonLevel:all = off ! stop after hard process