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(2)=1 ! which order running alphaS', 00009 'MSTP(33)=0 ! no K factors in hard cross sections', 00010 'MSTP(51)=7 ! structure function chosen (internal PDF CTEQ5L)', 00011 'MSTP(52)=1 ! work with internal PDF', 00012 'PARJ(1)=0.073 ! FLAV (Tuned by Professor on LEP data)', 00013 'PARJ(2)=0.2 ! FLAV (Tuned by Professor on LEP data)', 00014 'PARJ(3)=0.94 ! FLAV (Tuned by Professor on LEP data)', 00015 'PARJ(4)=0.032 ! FLAV (Tuned by Professor on LEP data)', 00016 'PARJ(11)=0.31 ! FLAV (Tuned by Professor on LEP data)', 00017 'PARJ(12)=0.4 ! FLAV (Tuned by Professor on LEP data)', 00018 'PARJ(13)=0.54 ! FLAV (Tuned by Professor on LEP data)', 00019 'PARJ(25)=0.63 ! FLAV (Tuned by Professor on LEP data)', 00020 'PARJ(26)=0.12 ! FLAV (Tuned by Professor on LEP data)', 00021 'MSTJ(11)=5 ! HAD Choice of the fragmentation function', 00022 'PARJ(21)=0.313 ! HAD', 00023 'PARJ(41)=0.49 ! HAD', 00024 'PARJ(42)=1.2 ! HAD', 00025 'PARJ(46)=1.0 ! HAD', 00026 'PARJ(47)=1.0 ! HAD', 00027 'MSTP(64)=3 ! ISR', 00028 'PARP(64)=2.0 ! ISR', 00029 'MSTP(67)=2 ! ISR', 00030 'PARP(67)=1.0 ! ISR', 00031 'MSTP(70)=2 ! ISR', 00032 'MSTP(72)=1 ! ISR', 00033 'PARJ(81)=0.257 ! FSR', 00034 'PARJ(82)=0.8 ! FSR', 00035 'PARP(71)=2.0 ! FSR', 00036 'MSTP(81)=21 ! MPI 21 is Pythia new set of MPI models', 00037 'MSTP(82)=5 ! MPI model', 00038 'PARP(82)=2.2 ! MPI pt cutoff for multiparton interactions', 00039 'PARP(89)=1800. ! MPI sqrts for which PARP82 is set', 00040 'PARP(83)=1.7 ! MPI matter distrbn parameter', 00041 'PARP(90)=0.23 ! MPI rescaling power', 00042 'MSTP(95)=6 ! CR (color reconnection parameters)', 00043 'PARP(77)=0.33 ! CR', 00044 'PARP(78)=0.9 ! CR', 00045 'MSTP(88)=0 ! BR', 00046 'PARP(79)=2.0 ! BR', 00047 'PARP(80)=0.05 ! BR', 00048 'MSTP(91)=1 ! BR', 00049 'PARP(91)=2.0 ! BR kt distribution', 00050 'PARP(93)=10.0 ! BR' 00051 ) 00052 )