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0001 # -*- ThePEG-repository -*-
0002
0003 ##################################################
0004 # Example generator based on LHC parameters
0005 # usage: Herwig read LHC.in
0006 ##################################################
0007
0008 read snippets/PPCollider.in
0009 ##################################################
0010 #switch pdfs to comparable to Pythia ##
0011 ##################################################
0012 read snippets/PDF-NNPDF30NLO.in
0013
0014 ##################################################
0015 # Technical parameters for this run
0016 ##################################################
0017 cd /Herwig/Generators
0018 #set EventGenerator:NumberOfEvents 100000
0019
0020 ##################################################
0021 #RHIC physics parameters (override defaults here)
0022 #Nashville Tune--arxiv/pdf/2411.16897
0023 ##################################################
0024
0025 set /Herwig/UnderlyingEvent/MPIHandler:pTmin0 2.99*GeV
0026 set /Herwig/UnderlyingEvent/MPIHandler:ReferenceScale 200*GeV
0027 set /Herwig/UnderlyingEvent/MPIHandler:Power 0.36
0028 set /Herwig/UnderlyingEvent/MPIHandler:InvRadius 1.53
0029 set /Herwig/UnderlyingEvent/MPIHandler:DiffractiveRatio 0.299
0030 set /Herwig/UnderlyingEvent/MPIHandler:Offset 820
0031
0032 set /Herwig/Hadronization/ColourReconnector:ReconnectionProbability 0.720
0033
0034 set /Herwig/Partons/RemnantDecayer:ladderMult 0.3966
0035 set /Herwig/Partons/RemnantDecayer:ladderbFactor 0
0036 ##################################################
0037
0038
0039 ########################
0040 ## sqrt(s) = 200 GeV ##
0041 ########################
0042 set EventGenerator:EventHandler:LuminosityFunction:Energy 200.0*GeV
0043
0044 ##################################################
0045 # Cuts to jets ##
0046 ##################################################
0047
0048 cd /Herwig/Cuts
0049 set /Herwig/Cuts/JetKtCut:MinKT 10.*GeV
0050 #7 GeV to match pythia "10GeV" pthatmin cut
0051 ##################################################
0052 # Matrix Elements for hadron-hadron collisions
0053 # (by default only gamma/Z switched on)
0054 ##################################################
0055 cd /Herwig/MatrixElements/
0056
0057 #
0058 # Electroweak boson W/Z processes
0059 #
0060 # Drell-Yan Z/gamma
0061 #insert SubProcess:MatrixElements[0] MEqq2gZ2ff
0062 #
0063 # Drell-Yan W
0064 # insert SubProcess:MatrixElements[0] MEqq2W2ff
0065 #
0066 # W+jet
0067 # insert SubProcess:MatrixElements[0] MEWJet
0068 #
0069 # Z+jet
0070 # insert SubProcess:MatrixElements[0] MEZJet
0071 #
0072 # WW/WZ/ZZ
0073 # insert SubProcess:MatrixElements[0] MEPP2VV
0074 #
0075 # Wgamma/Zgamma
0076 # insert SubProcess:MatrixElements[0] MEPP2VGamma
0077 #
0078 # Use old YFS formalism to add QED radiation off W/Z decay products.
0079 # Note: By default QED radiation is already included.
0080 # read snippets/YFS.in
0081
0082 #
0083 # QCD and gamma processes
0084 #
0085 # QCD 2-2 scattering
0086 insert SubProcess:MatrixElements[0] MEQCD2to2
0087 #
0088 # gamma+jet
0089 # insert SubProcess:MatrixElements[0] MEGammaJet
0090 #
0091 # gamma-gamma
0092 # insert SubProcess:MatrixElements[0] MEGammaGamma
0093
0094 #
0095 # Heavy quark processes
0096 #
0097 #
0098 # top-antitop production
0099 # insert SubProcess:MatrixElements[0] MEHeavyQuark
0100 #
0101 # single-top
0102 # t-channel
0103 # insert SubProcess:MatrixElements[0] MESingleTopTChannel
0104 # s-channel
0105 # insert SubProcess:MatrixElements[0] MESingleTopSChannel
0106 # tW
0107 # insert SubProcess:MatrixElements[0] MESingleTopTW
0108 #
0109 # Higgs Processes
0110 #
0111 #
0112 # gg/qqbar -> Higgs (recommend including q qbar->Hg as not in ME correction)
0113 # insert SubProcess:MatrixElements[0] MEHiggs
0114 # insert SubProcess:MatrixElements[0] MEHiggsJet
0115 # set MEHiggsJet:Process qqbar
0116 # set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV
0117 #
0118 # higgs+jet
0119 # insert SubProcess:MatrixElements[0] MEHiggsJet
0120 #
0121 # higgs + W (N.B. if considering all W decay modes useful to set )
0122 # (jet pT cut to zero so no cut on W decay products )
0123 # insert SubProcess:MatrixElements[0] MEPP2WH
0124 # set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV
0125 #
0126 # higgs + Z (N.B. if considering all Z decay modes useful to set )
0127 # (jet pT cut to zero so no cut on Z decay products )
0128 # insert SubProcess:MatrixElements[0] MEPP2ZH
0129 # set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV
0130 #
0131 # VBF Higgs
0132 # insert SubProcess:MatrixElements[0] MEPP2HiggsVBF
0133 #
0134 # t tbar Higgs
0135 # insert SubProcess:MatrixElements[0] MEPP2ttbarH
0136 #
0137 # b bbar Higgs
0138 # insert SubProcess:MatrixElements[0] MEPP2bbbarH
0139
0140 cd /Herwig/Generators
0141
0142 ##################################################
0143 # Useful analysis handlers for hadron-hadron physics
0144 ##################################################
0145 # analysis of W/Z events
0146 # insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/DrellYan
0147 # analysis of top-antitop events
0148 # insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/TTbar
0149 # analysis of gamma+jet events
0150 # insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/GammaJet
0151 # analysis of gamma-gamma events
0152 # insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/GammaGamma
0153 # analysis of higgs-jet events
0154 # insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/HiggsJet
0155 #analsis of hard QCD
0156 # inserw EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/JetsPlus
0157 ##################################################
0158 ## prepare for Rivet analysis or HepMC output
0159 ## when running with parton shower
0160 ##################################################
0161 #read snippets/Rivet.in
0162 #insert /Herwig/Analysis/Rivet:Analyses 0 XXX_2015_ABC123
0163 read snippets/HepMC.in
0164 #insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/HepMCFile
0165 set /Herwig/Analysis/HepMC:PrintEvent 50000000
0166 set /Herwig/Analysis/HepMC:Format GenEvent
0167 set /Herwig/Analysis/HepMCFile:Units GeV_mm
0168 #set /Herwig/Analsysis/Plot:EventNumber 12
0169 #insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/Plot
0170
0171 ##################################################
0172 # Save run for later usage with 'Herwig run'
0173 ##################################################
0174 saverun Herwig_Jet20 EventGenerator
