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File indexing completed on 2021-02-14 14:27:12

0001 #include "RecoTauTag/RecoTau/interface/PFRecoTauTagInfoAlgorithm.h"
0002 
0003 #include "DataFormats/Math/interface/deltaR.h"
0004 #include "RecoTauTag/RecoTau/interface/TauTagTools.h"
0005 
0006 using namespace reco;
0007 
0008 PFRecoTauTagInfoAlgorithm::PFRecoTauTagInfoAlgorithm(const edm::ParameterSet& parameters) {
0009   // parameters of the considered charged hadr. PFCandidates, based on their rec. tk properties :
0010   ChargedHadronsAssociationCone_ = parameters.getParameter<double>("ChargedHadrCand_AssociationCone");
0011   ChargedHadrCand_tkminPt_ = parameters.getParameter<double>("ChargedHadrCand_tkminPt");
0012   ChargedHadrCand_tkminPixelHitsn_ = parameters.getParameter<int>("ChargedHadrCand_tkminPixelHitsn");
0013   ChargedHadrCand_tkminTrackerHitsn_ = parameters.getParameter<int>("ChargedHadrCand_tkminTrackerHitsn");
0014   ChargedHadrCand_tkmaxipt_ = parameters.getParameter<double>("ChargedHadrCand_tkmaxipt");
0015   ChargedHadrCand_tkmaxChi2_ = parameters.getParameter<double>("ChargedHadrCand_tkmaxChi2");
0016   // parameters of the considered neutral hadr. PFCandidates, based on their rec. HCAL clus. properties :
0017   NeutrHadrCand_HcalclusMinEt_ = parameters.getParameter<double>("NeutrHadrCand_HcalclusMinEt");
0018   // parameters of the considered gamma PFCandidates, based on their rec. ECAL clus. properties :
0019   GammaCand_EcalclusMinEt_ = parameters.getParameter<double>("GammaCand_EcalclusMinEt");
0020   // parameters of the considered rec. Tracks (these ones catched through a JetTracksAssociation object, not through the charged hadr. PFCandidates inside the PFJet ; the motivation for considering them is the need for checking that a selection by the charged hadr. PFCandidates is equivalent to a selection by the rec. Tracks.) :
0021   tkminPt_ = parameters.getParameter<double>("tkminPt");
0022   tkminPixelHitsn_ = parameters.getParameter<int>("tkminPixelHitsn");
0023   tkminTrackerHitsn_ = parameters.getParameter<int>("tkminTrackerHitsn");
0024   tkmaxipt_ = parameters.getParameter<double>("tkmaxipt");
0025   tkmaxChi2_ = parameters.getParameter<double>("tkmaxChi2");
0026   //
0027   UsePVconstraint_ = parameters.getParameter<bool>("UsePVconstraint");
0028   ChargedHadrCand_tkPVmaxDZ_ = parameters.getParameter<double>("ChargedHadrCand_tkPVmaxDZ");
0029   tkPVmaxDZ_ = parameters.getParameter<double>("tkPVmaxDZ");
0030 }
0031 
0032 PFTauTagInfo PFRecoTauTagInfoAlgorithm::buildPFTauTagInfo(const JetBaseRef& thePFJet,
0033                                                           const std::vector<reco::CandidatePtr>& thePFCandsInEvent,
0034                                                           const TrackRefVector& theTracks,
0035                                                           const Vertex& thePV) const {
0036   PFTauTagInfo resultExtended;
0037   resultExtended.setpfjetRef(thePFJet);
0038 
0039   std::vector<reco::CandidatePtr> thePFCands;
0040   const float jetPhi = (*thePFJet).phi();
0041   const float jetEta = (*thePFJet).eta();
0042   auto dr2 = [jetPhi, jetEta](float phi, float eta) { return reco::deltaR2(jetEta, jetPhi, eta, phi); };
0043   for (const auto& iPFCand : thePFCandsInEvent) {
0044     float delta = dr2((*iPFCand).phi(), (*iPFCand).eta());
0045     if (delta < ChargedHadronsAssociationCone_ * ChargedHadronsAssociationCone_)
0046       thePFCands.push_back(iPFCand);
0047   }
0048   bool pvIsFake = (thePV.z() < -500.);
0049 
0050   std::vector<reco::CandidatePtr> theFilteredPFChargedHadrCands;
0051   if (UsePVconstraint_ && !pvIsFake) {
0052     theFilteredPFChargedHadrCands = tautagtools::filteredPFChargedHadrCands(thePFCands,
0053                                                                             ChargedHadrCand_tkminPt_,
0054                                                                             ChargedHadrCand_tkminPixelHitsn_,
0055                                                                             ChargedHadrCand_tkminTrackerHitsn_,
0056                                                                             ChargedHadrCand_tkmaxipt_,
0057                                                                             ChargedHadrCand_tkmaxChi2_,
0058                                                                             ChargedHadrCand_tkPVmaxDZ_,
0059                                                                             thePV,
0060                                                                             thePV.z());
0061   } else {
0062     theFilteredPFChargedHadrCands = tautagtools::filteredPFChargedHadrCands(thePFCands,
0063                                                                             ChargedHadrCand_tkminPt_,
0064                                                                             ChargedHadrCand_tkminPixelHitsn_,
0065                                                                             ChargedHadrCand_tkminTrackerHitsn_,
0066                                                                             ChargedHadrCand_tkmaxipt_,
0067                                                                             ChargedHadrCand_tkmaxChi2_,
0068                                                                             thePV);
0069   }
0070   resultExtended.setPFChargedHadrCands(theFilteredPFChargedHadrCands);
0071   resultExtended.setPFNeutrHadrCands(tautagtools::filteredPFNeutrHadrCands(thePFCands, NeutrHadrCand_HcalclusMinEt_));
0072   resultExtended.setPFGammaCands(tautagtools::filteredPFGammaCands(thePFCands, GammaCand_EcalclusMinEt_));
0073 
0074   TrackRefVector theFilteredTracks;
0075   if (UsePVconstraint_ && !pvIsFake) {
0076     theFilteredTracks = tautagtools::filteredTracks(
0077         theTracks, tkminPt_, tkminPixelHitsn_, tkminTrackerHitsn_, tkmaxipt_, tkmaxChi2_, tkPVmaxDZ_, thePV, thePV.z());
0078   } else {
0079     theFilteredTracks = tautagtools::filteredTracks(
0080         theTracks, tkminPt_, tkminPixelHitsn_, tkminTrackerHitsn_, tkmaxipt_, tkmaxChi2_, thePV);
0081   }
0082   resultExtended.setTracks(theFilteredTracks);
0083 
0084   return resultExtended;
0085 }