VertexHistory_cff.py

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import FWCore.ParameterSet.Config as cms

# Magnetic Field, Geometry, TransientTracks
from Configuration.StandardSequences.MagneticField_cff import *

# Track Associators
from SimTracker.TrackAssociatorProducers.trackAssociatorByChi2_cfi import *
from SimTracker.TrackAssociatorProducers.trackAssociatorByHits_cfi import *
from SimTracker.TrackAssociation.trackingParticleRecoTrackAsssociation_cfi import *
from SimTracker.VertexAssociation.VertexAssociatorByTracks_cfi import *

trackingParticleRecoTrackAsssociationByHits = trackingParticleRecoTrackAsssociation.clone(
    associator = 'trackAssociatorByHits'
)
vertexAssociatorByTracksByHits = VertexAssociatorByTracks.clone(
    trackAssociation = "trackingParticleRecoTrackAsssociationByHits"
)
vertexAssociatorSequence = cms.Sequence(
    trackingParticleRecoTrackAsssociationByHits +
    vertexAssociatorByTracksByHits
)

# Track history parameters
vertexHistory = cms.PSet(
    bestMatchByMaxValue = cms.untracked.bool(True),
    trackingTruth = cms.untracked.InputTag('mix','MergedTrackTruth'),
    vertexAssociator = cms.untracked.InputTag('vertexAssociatorByTracksByHits'),
    vertexProducer = cms.untracked.InputTag('offlinePrimaryVertices'),
    enableRecoToSim = cms.untracked.bool(True),
    enableSimToReco = cms.untracked.bool(False)
)