/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_14/src/RecoTauTag/RecoTau/python/PFRecoTauDiscriminationByECALIsolation_cfi.py

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import FWCore.ParameterSet.Config as cms
from RecoTauTag.RecoTau.PFRecoTauQualityCuts_cfi import PFTauQualityCuts
from RecoTauTag.RecoTau.TauDiscriminatorTools import requireLeadTrack

pfRecoTauDiscriminationByECALIsolation = cms.EDProducer("PFRecoTauDiscriminationByIsolation",
    PFTauProducer = cms.InputTag('pfRecoTauProducer'), #tau collection to discriminate

    # Require leading pion ensures that:
    #  1) these is at least one track above threshold (0.5 GeV) in the signal cone
    #  2) a track in the signal cone has pT > 5 GeV
    Prediscriminants = requireLeadTrack,

    # Select which collections to use for isolation.  You can select one or both
    ApplyDiscriminationByECALIsolation    = cms.bool(True),  # use PFGammas when isolating
    ApplyDiscriminationByTrackerIsolation = cms.bool(False), # use PFChargedHadr when isolating

    applyOccupancyCut                     = cms.bool(True),  # apply a cut on number of isolation objects
    maximumOccupancy                      = cms.uint32(0),   # no gammas w/ pt > 1.5 GeV allowed

    applySumPtCut                         = cms.bool(False), # apply a cut on the sum Pt of the isolation objects
    maximumSumPtCut                       = cms.double(6.0),

    applyRelativeSumPtCut                 = cms.bool(False), # apply a cut on IsoPt/TotalPt
    relativeSumPtCut                      = cms.double(0.0),

    qualityCuts                           = PFTauQualityCuts,# set the standard quality cuts
)