# cfg file for X_b -> Ups(1S) pion+ pion-. Masses and widths are matched between pythia, evtgen and PDG 2016
#The mass of the chi_b0(1P) is set to 11.7 GeV (desired resonant mass)

import FWCore.ParameterSet.Config as cms
from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.MCTunes2017.PythiaCP5Settings_cfi import *
from GeneratorInterface.EvtGenInterface.EvtGenSetting_cff import *

generator = cms.EDFilter("Pythia8GeneratorFilter",
    pythiaPylistVerbosity = cms.untracked.int32(0),
    pythiaHepMCVerbosity = cms.untracked.bool(False),
    maxEventsToPrint = cms.untracked.int32(0),
    comEnergy = cms.double(13000.0),
    ExternalDecays = cms.PSet(
        EvtGen130 = cms.untracked.PSet(
            decay_table = cms.string('GeneratorInterface/EvtGenInterface/data/DECAY_2014_NOLONGLIFE.DEC'),
            particle_property_file = cms.FileInPath('GeneratorInterface/EvtGenInterface/data/evt_2014.pdl'),
            list_forced_decays = cms.vstring('myX_b'),       
            operates_on_particles = cms.vint32(10551),        
            convertPythiaCodes = cms.untracked.bool(False),
            user_decay_embedded= cms.vstring(
"""
Particle Upsilon 9.4603000 0.00005402
Particle chi_b0  11.700000 0.00000

Alias myUpsilon Upsilon
Alias myX_b    chi_b0 

Decay myUpsilon
1.0   mu+  mu-          PHOTOS  VLL;
Enddecay

Decay myX_b
1.0   myUpsilon pi+ pi-  PHSP;
Enddecay

End
"""
            )
	),
        parameterSets = cms.vstring('EvtGen130')
    ),
    PythiaParameters = cms.PSet(
        pythia8CommonSettingsBlock,
	pythia8CP5SettingsBlock,
        processParameters = cms.vstring(
            'Bottomonium:states(3PJ) = 10551',   
            'Bottomonium:O(3PJ)[3P0(1)] = 0.085',
            'Bottomonium:O(3PJ)[3S1(8)] = 0.04',
            'Bottomonium:gg2bbbar(3PJ)[3PJ(1)]g = on',
            'Bottomonium:qg2bbbar(3PJ)[3PJ(1)]q = on',
            'Bottomonium:qqbar2bbbar(3PJ)[3PJ(1)]g = on',
            'Bottomonium:gg2bbbar(3PJ)[3S1(8)]g = on',
            'Bottomonium:qg2bbbar(3PJ)[3S1(8)]q = on',
            'Bottomonium:qqbar2bbbar(3PJ)[3S1(8)]g = on',
            'PhaseSpace:pTHatMin = 2.',
            '10551:m0 = 11.700000',        
            '10551:onMode = off'
            ),
        parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8CP5Settings',
                                    'processParameters'
                                    )
    )
)

generator.PythiaParameters.processParameters.extend(EvtGenExtraParticles)

# We will filter for X_b, and chi_b1, first on the ID, then in the mass, this will constraint the photon daughter

pwaveIDfilter = cms.EDFilter("MCSingleParticleFilter",
    ParticleID = cms.untracked.vint32(10551),
    MinPt = cms.untracked.vdouble(0.0),
    MinEta = cms.untracked.vdouble(-9.),
    MaxEta = cms.untracked.vdouble(9.),
    Status = cms.untracked.vint32(2)
)

upsIDfilter = cms.EDFilter("MCSingleParticleFilter",
    ParticleID = cms.untracked.vint32(553),
    MinPt = cms.untracked.vdouble(5.0),
    MinEta = cms.untracked.vdouble(-2.4),
    MaxEta = cms.untracked.vdouble(2.4),
    Status = cms.untracked.vint32(2)
)

# Next two muon filter are derived from muon reconstruction

muminusfilter = cms.EDFilter("PythiaDauVFilter",
    MotherID = cms.untracked.int32(0),
    MinPt = cms.untracked.vdouble(2.5),
    ParticleID = cms.untracked.int32(553),
    ChargeConjugation = cms.untracked.bool(False),
    MinEta = cms.untracked.vdouble(-2.4),
    MaxEta = cms.untracked.vdouble(2.4),
    NumberDaughters = cms.untracked.int32(1),
    DaughterIDs = cms.untracked.vint32(-13)
)

muplusfilter = cms.EDFilter("PythiaDauVFilter",
    MotherID = cms.untracked.int32(0),
    MinPt = cms.untracked.vdouble(2.5),
    ParticleID = cms.untracked.int32(553),
    ChargeConjugation = cms.untracked.bool(False),
    MinEta = cms.untracked.vdouble(-2.4),
    MaxEta = cms.untracked.vdouble(2.4),
    NumberDaughters = cms.untracked.int32(1),
    DaughterIDs = cms.untracked.vint32(13)
)

#  two pion filter 

piminusfilter = cms.EDFilter("PythiaDauVFilter",
    MotherID = cms.untracked.int32(0),
    MinPt = cms.untracked.vdouble(0.5),
    ParticleID = cms.untracked.int32(10551),
    ChargeConjugation = cms.untracked.bool(False),
    MinEta = cms.untracked.vdouble(-2.4),
    MaxEta = cms.untracked.vdouble(2.4),
    NumberDaughters = cms.untracked.int32(1),
    DaughterIDs = cms.untracked.vint32(-211)
)

piplusfilter = cms.EDFilter("PythiaDauVFilter",
    MotherID = cms.untracked.int32(0),
    MinPt = cms.untracked.vdouble(0.5),
    ParticleID = cms.untracked.int32(10551),
    ChargeConjugation = cms.untracked.bool(False),
    MinEta = cms.untracked.vdouble(-2.4),
    MaxEta = cms.untracked.vdouble(2.4),
    NumberDaughters = cms.untracked.int32(1),
    DaughterIDs = cms.untracked.vint32(211)
)

ProductionFilterSequence = cms.Sequence(generator*pwaveIDfilter*upsIDfilter*piminusfilter*piplusfilter*muminusfilter*muplusfilter)