TwoBodyDecayMomConstraintProducer_cff.py

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import FWCore.ParameterSet.Config as cms

TwoBodyDecayMomConstraint = cms.EDProducer(
    "TwoBodyDecayMomConstraintProducer",
    src = cms.InputTag("AlignmentTrackSelector"),
    beamSpot = cms.InputTag("offlineBeamSpot"),

    
    primaryMass = cms.double(91.1876),
    primaryWidth = cms.double(2.4952),
    secondaryMass = cms.double(0.105658),

    
    EstimatorParameters = cms.PSet(
        MaxIterationDifference = cms.untracked.double(0.01),
        RobustificationConstant = cms.untracked.double(1.0),
        MaxIterations = cms.untracked.int32(100),
        UseInvariantMass = cms.untracked.bool(True)
    ),

    
    chi2Cut = cms.double( 10. ),

    
    momentumForRefitting = cms.string( "atVertex" ),

    
    fixedMomentumError = cms.double( 1e-4 ),

    
    sigmaPositionCut = cms.double( 5e-1 )
)