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File indexing completed on 2024-04-06 12:03:36

 #Default Pythia Paramters for Hydjet & Pyquen
 
 import FWCore.ParameterSet.Config as cms
 
 from Configuration.Generator.PythiaUESettings_cfi import *
 
 collisionParameters4TeV = cms.PSet(aBeamTarget = cms.double(208.0), ## beam/target atomic number
                                comEnergy = cms.double(4000.0)
                                )
 
 collisionParameters2760GeV = cms.PSet(aBeamTarget = cms.double(208.0), ## beam/target atomic number
                                    comEnergy = cms.double(2760.0)
                                    )
 
 collisionParameters5362GeV = cms.PSet(aBeamTarget = cms.double(208.0), ## beam/target atomic number
                                       comEnergy = cms.double(5362.0)
                                   )
 
 collisionParameters = collisionParameters2760GeV.clone()
 
 qgpParameters = cms.PSet(qgpInitialTemperature = cms.double(1.0), ## initial temperature of QGP; allowed range [0.2,2.0]GeV;
                          qgpProperTimeFormation = cms.double(0.1), ## proper time of QGP formation; allowed range [0.01,10.0]fm/c;
                          hadronFreezoutTemperature = cms.double(0.14),
                          doRadiativeEnLoss = cms.bool(True), ## if true, perform partonic radiative en loss
                          doCollisionalEnLoss = cms.bool(False),
                          qgpNumQuarkFlavor = cms.int32(0),  ## number of active quark flavors in qgp; allowed values: 0,1,2,3 
                          )
 
 pyquenParameters  = cms.PSet(doIsospin = cms.bool(True),
                              angularSpectrumSelector = cms.int32(0), ## angular emitted gluon spectrum :
                              embeddingMode = cms.int32(0),
                              )
 
 hydjetParameters = cms.PSet(sigmaInelNN = cms.double(58),
                             shadowingSwitch = cms.int32(0),
                             nMultiplicity = cms.int32(21500),
                             fracSoftMultiplicity = cms.double(1.),
                             maxLongitudinalRapidity = cms.double(4.5),
                             maxTransverseRapidity = cms.double(1.),
                             rotateEventPlane = cms.bool(True),
                             allowEmptyEvents = cms.bool(False),
                             embeddingMode = cms.int32(0)                            
                             )
 
 pyquenPythiaDefaultBlock = cms.PSet(
     pythiaUESettingsBlock,
     hydjetPythiaDefault = cms.vstring('MSEL=0   ! user processes',
                                       'CKIN(3)=6.',# ! ptMin
                                       'MSTP(81)=0'
                                       ),
     ppDefault = cms.vstring('MSEL=1   ! QCD hight pT processes (only jets)',
                             'CKIN(3)=6.',# ! ptMin
                             'MSTP(81)=0'
                             ),
     pythiaHirootDefault = cms.vstring('MSEL=0', # ! Only user defined processes,  
                                 'MSTU(21)=1', # ! to avoid stopping run',
                                 'PARU(14)=1.', # ! tolerance parameter to adjust fragmentation',
                                 'MSTP(81)=0', # ! pp multiple scattering off',
                                 'PMAS(5,1)=4.8', # ! b quark mass',
                                 'PMAS(6,1)=175.0', # ! t quark mass'
                                 'CKIN(3)=7.',# ! ptMin
                                 'MSTJ(22)=2',
                                 'PARJ(71)=10.', # Decays only if life time < 10mm
                                 'PARP(67)=1.',
                                 'PARP(82)=1.9',
                                 'PARP(85)=0.33',
                                 'PARP(86)=0.66',
                                 'PARP(89)=1000.',
                                 'PARP(91)=1.0',
                                 'MSTJ(11)=3',
                                 'MSTJ(22)=2'                                
                                 ),
     ppJets = cms.vstring('MSEL=1   ! QCD hight pT processes'),
     customProcesses = cms.vstring('MSEL=0   ! User processes'),
     pythiaJets = cms.vstring('MSUB(11)=1', # q+q->q+q
                              'MSUB(12)=1', # q+qbar->q+qbar
                              'MSUB(13)=1', # q+qbar->g+g
                              'MSUB(28)=1', # q+g->q+g
                              'MSUB(53)=1', # g+g->q+qbar
                              'MSUB(68)=1' # g+g->g+g
                              ),
     pythiaPromptPhotons = cms.vstring('MSUB(14)=1', # q+qbar->g+gamma
                                       'MSUB(18)=1', # q+qbar->gamma+gamma
                                       'MSUB(29)=1', # q+g->q+gamma
                                       'MSUB(114)=1', # g+g->gamma+gamma
                                       'MSUB(115)=1' # g+g->g+gamma
                                       ),
 
     pythiaWeakBosons = cms.vstring('MSUB(1)=1',
                                    'MSUB(2)=1'),
     
     pythiaZjets = cms.vstring('MSUB(15)=1',
                               'MSUB(30)=1'),
     
     pythiaCharmoniumNRQCD = cms.vstring('MSUB(421) = 1',
                                         'MSUB(422) = 1',
                                         'MSUB(423) = 1',
                                         'MSUB(424) = 1',
                                         'MSUB(425) = 1',
                                         'MSUB(426) = 1',
                                         'MSUB(427) = 1',
                                         'MSUB(428) = 1',
                                         'MSUB(429) = 1',
                                         'MSUB(430) = 1',
                                         'MSUB(431) = 1',
                                         'MSUB(432) = 1',
                                         'MSUB(433) = 1',
                                         'MSUB(434) = 1',
                                         'MSUB(435) = 1',
                                         'MSUB(436) = 1',
                                         'MSUB(437) = 1',
                                         'MSUB(438) = 1',
                                         'MSUB(439) = 1'
                                         ),
 
     pythiaBottomoniumNRQCD = cms.vstring('MSUB(461) = 1',
                                          'MSUB(462) = 1',
                                          'MSUB(463) = 1',
                                          'MSUB(464) = 1',
                                          'MSUB(465) = 1',
                                          'MSUB(466) = 1',
                                          'MSUB(467) = 1',
                                          'MSUB(468) = 1',
                                          'MSUB(469) = 1',
                                          'MSUB(470) = 1',
                                          'MSUB(471) = 1',
                                          'MSUB(472) = 1',
                                          'MSUB(473) = 1',
                                          'MSUB(474) = 1',
                                          'MSUB(475) = 1',
                                          'MSUB(476) = 1',
                                          'MSUB(477) = 1',
                                          'MSUB(478) = 1',
                                          'MSUB(479) = 1',
                                          ),
 
     pythiaQuarkoniaSettings = cms.vstring('PARP(141)=1.16',   # Matrix Elements
                                           'PARP(142)=0.0119',
                                           'PARP(143)=0.01',
                                           'PARP(144)=0.01',
                                           'PARP(145)=0.05',
                                           'PARP(146)=9.28',
                                           'PARP(147)=0.15',
                                           'PARP(148)=0.02',
                                           'PARP(149)=0.02',
                                           'PARP(150)=0.085',                                                
                                           # Meson spin
                                           'PARJ(13)=0.60',
                                           'PARJ(14)=0.162',
                                           'PARJ(15)=0.018',
                                           'PARJ(16)=0.054',
                                           # Polarization
                                           'MSTP(145)=0',
                                           'MSTP(146)=0',
                                           'MSTP(147)=0',
                                           'MSTP(148)=1',
                                           'MSTP(149)=1',
                                           # Chi_c branching ratios
                                           'BRAT(861)=0.202',
                                           'BRAT(862)=0.798',
                                           'BRAT(1501)=0.013',
                                           'BRAT(1502)=0.987',
                                           'BRAT(1555)=0.356',
                                           'BRAT(1556)=0.644'
                                           ),
     
     pythiaZtoMuons = cms.vstring("MDME(174,1)=0",          # !Z decay into d dbar,
                                  "MDME(175,1)=0",          # !Z decay into u ubar,
                                  "MDME(176,1)=0",          # !Z decay into s sbar,
                                  "MDME(177,1)=0",          # !Z decay into c cbar,
                                  "MDME(178,1)=0",          # !Z decay into b bbar,
                                  "MDME(179,1)=0",          # !Z decay into t tbar,
                                  "MDME(182,1)=0",          # !Z decay into e- e+,
                                  "MDME(183,1)=0",          # !Z decay into nu_e nu_ebar,
                                  "MDME(184,1)=1",          # !Z decay into mu- mu+,
                                  "MDME(185,1)=0",          # !Z decay into nu_mu nu_mubar,
                                  "MDME(186,1)=0",          # !Z decay into tau- tau+,
                                  "MDME(187,1)=0"           # !Z decay into nu_tau nu_taubar
                                  ),
 
 
     pythiaZtoElectrons = cms.vstring("MDME(174,1)=0",          # !Z decay into d dbar,
                                      "MDME(175,1)=0",          # !Z decay into u ubar,
                                      "MDME(176,1)=0",          # !Z decay into s sbar,
                                      "MDME(177,1)=0",          # !Z decay into c cbar,
                                      "MDME(178,1)=0",          # !Z decay into b bbar,
                                      "MDME(179,1)=0",          # !Z decay into t tbar,
                                      "MDME(182,1)=1",          # !Z decay into e- e+,
                                      "MDME(183,1)=0",          # !Z decay into nu_e nu_ebar,
                                      "MDME(184,1)=0",          # !Z decay into mu- mu+,
                                      "MDME(185,1)=0",          # !Z decay into nu_mu nu_mubar,
                                      "MDME(186,1)=0",          # !Z decay into tau- tau+,
                                      "MDME(187,1)=0"           # !Z decay into nu_tau nu_taubar
                                      ),
     
     pythiaZtoMuonsAndElectrons = cms.vstring("MDME(174,1)=0",          # !Z decay into d dbar,
                                              "MDME(175,1)=0",          # !Z decay into u ubar,
                                              "MDME(176,1)=0",          # !Z decay into s sbar,
                                              "MDME(177,1)=0",          # !Z decay into c cbar,
                                              "MDME(178,1)=0",          # !Z decay into b bbar,
                                              "MDME(179,1)=0",          # !Z decay into t tbar,
                                              "MDME(182,1)=1",          # !Z decay into e- e+,
                                              "MDME(183,1)=0",          # !Z decay into nu_e nu_ebar,
                                              "MDME(184,1)=1",          # !Z decay into mu- mu+,
                                              "MDME(185,1)=0",          # !Z decay into nu_mu nu_mubar,
                                              "MDME(186,1)=0",          # !Z decay into tau- tau+,
                                              "MDME(187,1)=0"           # !Z decay into nu_tau nu_taubar
                                              ),
     
     pythiaUpsilonToMuons = cms.vstring('BRAT(1034) = 0 ',  # switch off',
                                        'BRAT(1035) = 1 ',  # switch on',
                                        'BRAT(1036) = 0 ',  # switch off',
                                        'BRAT(1037) = 0 ',  # switch off',
                                        'BRAT(1038) = 0 ',  # switch off',
                                        'BRAT(1039) = 0 ',  # switch off',
                                        'BRAT(1040) = 0 ',  # switch off',
                                        'BRAT(1041) = 0 ',  # switch off',
                                        'BRAT(1042) = 0 ',  # switch off',
                                        'MDME(1034,1) = 0 ',  # switch off',
                                        'MDME(1035,1) = 1 ',  # switch on',
                                        'MDME(1036,1) = 0 ',  # switch off',
                                        'MDME(1037,1) = 0 ',  # switch off',
                                        'MDME(1038,1) = 0 ',  # switch off',
                                        'MDME(1039,1) = 0 ',  # switch off',
                                        'MDME(1040,1) = 0 ',  # switch off',
                                        'MDME(1041,1) = 0 ',  # switch off',
                                        'MDME(1042,1) = 0 ',  # switch off'
                                        ),
 
    pythiaJpsiToMuons = cms.vstring('BRAT(858) = 0 ',  # switch off',
                                    'BRAT(859) = 1 ',  # switch on',
                                    'BRAT(860) = 0 ',  # switch off',
                                    'MDME(858,1) = 0 ',  # switch off',
                                    'MDME(859,1) = 1 ',  # switch on',
                                    'MDME(860,1) = 0 ',  # switch off'
                                    ),
     
     pythiaMuonCandidates = cms.vstring(
     'CKIN(3)=20',
     'MSTJ(22)=2',
     'PARJ(71)=40.'
     ),
     myParameters = cms.vstring(
     )
     
 )    
 
 # This one is not to be used
 impactParameters = cms.PSet(cFlag = cms.int32(1),
                             bFixed = cms.double(0),
                             bMin = cms.double(0),
                             bMax = cms.double(30)
                             )
 

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