00001 import FWCore.ParameterSet.Config as cms 00002 00003 pythiaUESettingsBlock = cms.PSet( 00004 pythiaUESettings = cms.vstring( 00005 'MSTU(21)=1 ! Check on possible errors during program execution', 00006 'MSTJ(22)=2 ! Decay those unstable particles', 00007 'PARJ(71)=10 . ! for which ctau 10 mm', 00008 'MSTP(51) = 20650 ! PDF set', 00009 'MSTP(52) = 2 ! PDF set internal (=1) or pdflib (=2)', 00010 'MSTP( 3) = 2 ! INT switch for choice of LambdaQCD', 00011 'PARP(62) = 1.0250 ! ISR IR cutoff', 00012 'MSTP(64) = 2 ! ISR alphaS type', 00013 'PARP(64) = 1.0000 ! ISR renormalization scale prefactor', 00014 'MSTP(67) = 2 ! ISR coherence option for 1st emission', 00015 'PARP(67) = 4.0000 ! ISR Q2max factor', 00016 'MSTP(68) = 3 ! ISR phase space choice & ME corrections', 00017 'MSTP(70) = 0 ! ISR IR regularization scheme', 00018 'MSTP(72) = 1 ! IFSR scheme for non-decay FSR', 00019 'PARP(71) = 4.0000 ! IFSR Q2max factor in non-s-channel procs', 00020 'PARJ(81) = 0.2900 ! FSR LambdaQCD (inside resonance decays)', 00021 'PARJ(82) = 1.0000 ! FSR IR cutoff', 00022 'MSTP(33) = 0 ! "K" switch for K-factor on/off & type', 00023 'MSTP(81) = 21 ! UE model', 00024 'PARP(82) = 2.2920 ! UE IR cutoff at reference ecm', 00025 'PARP(89) = 1800.0 ! UE IR cutoff reference ecm', 00026 'PARP(90) = 0.2500 ! UE IR cutoff ecm scaling power', 00027 'MSTP(82) = 4 ! UE hadron transverse mass distribution', 00028 'PARP(83) = 0.3560 ! UE mass distribution parameter', 00029 'PARP(84) = 0.6510 ! UE mass distribution parameter', 00030 'MSTP(88) = 1 ! BR composite scheme', 00031 'MSTP(89) = 1 ! BR color scheme', 00032 'PARP(79) = 2.0000 ! BR composite x enhancement', 00033 'PARP(80) = 0.1000 ! BR breakup suppression', 00034 'MSTP(91) = 1 ! BR primordial kT distribution', 00035 'PARP(91) = 2.0000 ! BR primordial kT width <|kT|>', 00036 'PARP(93) = 10.000 ! BR primordial kT UV cutoff', 00037 'MSTP(95) = 6 ! FSI color (re-)connection model', 00038 'PARP(78) = 0.5380 ! FSI color reconnection strength', 00039 'PARP(77) = 1.0160 ! FSI color reco high-pT damping strength', 00040 'MSTJ(11) = 4 ! HAD choice of fragmentation function(s)', 00041 'PARJ( 1) = 0.1000 ! HAD diquark suppression', 00042 'PARJ( 2) = 0.3000 ! HAD strangeness suppression', 00043 'PARJ( 3) = 0.4000 ! HAD strange diquark suppression', 00044 'PARJ( 4) = 0.0500 ! HAD vector diquark suppression ', 00045 'PARJ( 5) = 0.5000 ! HAD P(popcorn)', 00046 'PARJ( 6) = 0.5000 ! HAD extra popcorn B(s)-M-B(s) supp', 00047 'PARJ( 7) = 0.5000 ! HAD extra popcorn B-M(s)-B supp', 00048 'PARJ(11) = 0.5000 ! HAD P(vector meson), u and d only', 00049 'PARJ(12) = 0.6000 ! HAD P(vector meson), contains s', 00050 'PARJ(13) = 0.7500 ! HAD P(vector meson), heavy quarks', 00051 'PARJ(21) = 0.3600 ! HAD fragmentation pT', 00052 'PARJ(25) = 1.0000 ! HAD eta0 suppression', 00053 'PARJ(26) = 0.4000 ! HAD eta0prim suppression', 00054 'PARJ(41) = 0.3000 ! HAD string parameter a(Meson)', 00055 'PARJ(42) = 0.5800 ! HAD string parameter b', 00056 'PARJ(45) = 0.5000 ! HAD string a(Baryon)-a(Meson)', 00057 'PARJ(46) = 0.7500 ! HAD Lund(=0)-Bowler(=1) rQ (rc)', 00058 ) 00059 )