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[Tau]: add parameter to isolation module #15707

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merged 1 commit into from Sep 6, 2016
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[Tau]: add parameter to isolation module #15707

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9 changes: 8 additions & 1 deletion RecoTauTag/RecoTau/plugins/PFRecoTauDiscriminationByIsolation.cc
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Expand Up @@ -39,6 +39,12 @@ class PFRecoTauDiscriminationByIsolation : public PFTauDiscriminationProducerBas
calculateWeights_ = pset.exists("ApplyDiscriminationByWeightedECALIsolation") ?
pset.getParameter<bool>("ApplyDiscriminationByWeightedECALIsolation") : false;

// RIC: multiply neutral isolation by a flat factor.
// Useful, for instance, to combine charged and neutral isolations
// with different relative weights
weightGammas_ = pset.exists("WeightECALIsolation") ?
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This module really should be switched to use fillDescriptions.

pset.getParameter<double>("WeightECALIsolation") : 1.0;

// RIC: allow to relax the isolation completely beyond a given tau pt
minPtForNoIso_ = pset.exists("minTauPtForNoIso") ?
pset.getParameter<double>("minTauPtForNoIso") : -99.;
Expand Down Expand Up @@ -219,6 +225,7 @@ class PFRecoTauDiscriminationByIsolation : public PFTauDiscriminationProducerBas
bool includeTracks_;
bool includeGammas_;
bool calculateWeights_;
double weightGammas_;
bool applyOccupancyCut_;
uint32_t maximumOccupancy_;
bool applySumPtCut_;
Expand Down Expand Up @@ -559,7 +566,7 @@ PFRecoTauDiscriminationByIsolation::discriminate(const PFTauRef& pfTau) const
neutralPt = 0.;
}

totalPt = chargedPt + neutralPt;
totalPt = chargedPt + weightGammas_ * neutralPt;
LogTrace("discriminate") << "totalPt = " << totalPt << " (cut = " << maximumSumPt_ << ")" ;

failsSumPtCut = (totalPt > maximumSumPt_);
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1 change: 1 addition & 0 deletions RecoTauTag/RecoTau/python/PFRecoTauDiscriminationByIsolation_cfi.py
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Expand Up @@ -15,6 +15,7 @@
ApplyDiscriminationByECALIsolation = cms.bool(True), # use PFGammas when isolating
ApplyDiscriminationByTrackerIsolation = cms.bool(True), # use PFChargedHadr when isolating
ApplyDiscriminationByWeightedECALIsolation = cms.bool(False), #do not use pileup weighting of neutral deposits by default
WeightECALIsolation = cms.double(1.), # apply a flat, overall weight to ECAL isolation. Useful to combine charged and neutral isolations with different relative weights. Default 1.

applyOccupancyCut = cms.bool(True), # apply a cut on number of isolation objects
maximumOccupancy = cms.uint32(0), # no tracks > 1 GeV or gammas > 1.5 GeV allowed
Expand Down