import FWCore.ParameterSet.Config as cms

configurationMetadata = cms.untracked.PSet(
        version = cms.untracked.string('$Revision: 1.1 $'),
        name = cms.untracked.string('$Source: /local/reps/CMSSW/CMSSW/Configuration/GenProduction/python/EightTeV/PYTHIA6_inclB0toJpsiMuMu_8TeV_cff.py,v $'),
        annotation = cms.untracked.string('Winter13: Pythia6+EvtGen generation of B0->Jpsi->MuMu, 5.023TeV, Z2star tune')
)

from Configuration.Generator.PythiaUEZ2starSettings_cfi import *

generator = cms.EDFilter("Pythia6GeneratorFilter",
    pythiaPylistVerbosity = cms.untracked.int32(0),
    pythiaHepMCVerbosity = cms.untracked.bool(False),
    comEnergy = cms.double(5023.0),
#   BF(B0->JPsiX) * BF(JPsi->mumu) = 0.0185 * 0.0593
    crossSection = cms.untracked.double(54402709.5),
    filterEfficiency = cms.untracked.double(0.0003114),
    maxEventsToPrint = cms.untracked.int32(0),
    ExternalDecays = cms.PSet(
        EvtGen = cms.untracked.PSet(
             operates_on_particles = cms.vint32( 0 ), # 0 (zero) means default list (hardcoded)
                                                      # you can put here the list of particles (PDG IDs)
                                                      # that you want decayed by EvtGen
             use_default_decay = cms.untracked.bool(False),
             decay_table = cms.FileInPath('GeneratorInterface/ExternalDecays/data/DECAY_NOLONGLIFE.DEC'),
             #decay_table = cms.FileInPath('GeneratorInterface/ExternalDecays/data/DECAY.DEC'),
             particle_property_file = cms.FileInPath('GeneratorInterface/ExternalDecays/data/evt.pdl'),
             #user_decay_file = cms.FileInPath('GeneratorInterface/ExternalDecays/data/Validation.dec'),
             user_decay_file = cms.FileInPath('GeneratorInterface/ExternalDecays/data/incl_BtoJpsi_mumu.dec'),
             list_forced_decays = cms.vstring('MyB0',
                                              'Myanti-B0',
                                              'MyB+',
                                              'MyB-',
                                              'MyB_s0',
                                              'Myanti-B_s0',
                                              'MyLambda_b0',
                                              'Myanti-Lambda_b0'),
        ),
        parameterSets = cms.vstring('EvtGen')
    ),
    PythiaParameters = cms.PSet(
        pythiaUESettingsBlock,
        bbbarSettings = cms.vstring('MSEL = 1'), 
        # This is a vector of ParameterSet names to be read, in this order
        parameterSets = cms.vstring(
             'pythiaUESettings',
             'bbbarSettings')
    )
)

bfilter = cms.EDFilter("PythiaFilter",
    ParticleID = cms.untracked.int32(5)
)

## oniafilter = cms.EDFilter("PythiaFilter",
##    Status = cms.untracked.int32(2),
##    MaxEta = cms.untracked.double(1000.0),
##    MinEta = cms.untracked.double(-1000.0),
##    MinPt = cms.untracked.double(0.0),
##    ParticleID = cms.untracked.int32(443)
##)

oniafilter = cms.EDFilter("MCSingleParticleFilter",
    Status = cms.untracked.vint32(     2,    2),
    ParticleID = cms.untracked.vint32(443, 100443),
    MinPt = cms.untracked.vdouble(    0.0, 0.0),
    MaxEta = cms.untracked.vdouble(   1000.0, 1000.0),
    MinEta = cms.untracked.vdouble(   -1000.0, -1000.0),
)

mumugenfilter = cms.EDFilter("MCParticlePairFilter",
    Status = cms.untracked.vint32(1, 1),
    MinP = cms.untracked.vdouble(2.5, 2.5),
    MaxEta = cms.untracked.vdouble(2.5, 2.5),
    MinEta = cms.untracked.vdouble(-2.5, -2.5),
    ParticleCharge = cms.untracked.int32(-1),
    ParticleID1 = cms.untracked.vint32(13),
    ParticleID2 = cms.untracked.vint32(13)
)


ProductionFilterSequence = cms.Sequence(generator*bfilter*oniafilter*mumugenfilter)