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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