[1] | 1 | ! main62.cmnd. |
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| 2 | ! This file contains commands to be read in for a Pythia8 run. |
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| 3 | ! Lines not beginning with a letter or digit are comments. |
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| 4 | ! Names are case-insensitive - but spellings-sensitive! |
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| 5 | ! The settings here are illustrative, not always physics-motivated. |
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| 6 | |
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| 7 | ! 1) Settings used in the main program. |
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| 8 | Main:timesAllowErrors = 3 ! how many aborts before run stops |
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| 9 | |
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| 10 | ! 2) Settings related to output in init(), next() and stat(). |
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| 11 | Init:showChangedSettings = on ! list changed settings |
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| 12 | Init:showAllSettings = off ! list all settings |
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| 13 | Init:showChangedParticleData = on ! list changed particle data |
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| 14 | Init:showAllParticleData = off ! list all particle data |
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| 15 | Next:numberCount = 1000 ! print message every n events |
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| 16 | Next:numberShowLHA = 1 ! print LHA information n times |
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| 17 | Next:numberShowInfo = 1 ! print event information n times |
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| 18 | Next:numberShowProcess = 1 ! print process record n times |
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| 19 | Next:numberShowEvent = 1 ! print event record n times |
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| 20 | Stat:showPartonLevel = off ! additional statistics on MPI |
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| 21 | |
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| 22 | ! 3) PDF settings. Default is to use internal PDFs |
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| 23 | PDF:useLHAPDF = on |
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| 24 | ! some pdf sets examples: cteq61.LHpdf cteq61.LHgrid MRST2004nlo.LHgrid |
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| 25 | PDF:LHAPDFset = MRST2001lo.LHgrid |
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| 26 | ! Allow extrapolation of PDF's beyond x and Q2 boundaries, at own risk. |
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| 27 | ! Default behaviour is to freeze PDF's at boundaries. |
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| 28 | PDF:extrapolateLHAPDF = on |
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| 29 | |
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| 30 | ! 4) Other common settings. |
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| 31 | 6:m0 = 175. ! same m_t as Pythia 6.4 to compare |
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| 32 | #ParticleDecays:limitTau0 = on ! set long-lived particle stable ... |
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| 33 | #ParticleDecays:tau0Max = 10 ! ... if c*tau0 > 10 mm |
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| 34 | |
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| 35 | ! 5) The number of subruns to execute. |
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| 36 | Main:numberOfSubruns = 2 |
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| 37 | |
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| 38 | ! 6) Information specific to the first subrun |
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| 39 | Main:subrun = 1 ! matches readFile( ..., 1) |
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| 40 | Beams:frameType = 4 ! use LHEF input |
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| 41 | Beams:LHEF = ttbar.lhe ! first LHEF event file |
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| 42 | |
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| 43 | ! 7) Information specific to the second subrun |
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| 44 | Main:subrun = 2 ! matches readFile( ..., 2) |
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| 45 | Beams:newLHEFsameInit = on ! no reinitialization needed/wanted |
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| 46 | Beams:LHEF = ttbar2.lhe ! second LHEF event file |
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