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File indexing completed on 2021-02-14 14:27:05

0001 
0002 /** \class PFRecoTauDiscriminationAgainstMuon2
0003  *
0004  * Compute tau Id. discriminator against muons.
0005  * 
0006  * \author Christian Veelken, LLR
0007  *
0008  */
0009 
0010 #include "RecoTauTag/RecoTau/interface/TauDiscriminationProducerBase.h"
0011 #include "RecoTauTag/RecoTau/plugins/PFRecoTauDiscriminationAgainstMuon2Helper.h"
0012 
0013 #include "FWCore/Utilities/interface/Exception.h"
0014 
0015 #include <FWCore/ParameterSet/interface/ConfigurationDescriptions.h>
0016 #include <FWCore/ParameterSet/interface/ParameterSetDescription.h>
0017 
0018 #include "DataFormats/MuonReco/interface/Muon.h"
0019 #include "DataFormats/MuonReco/interface/MuonFwd.h"
0020 #include "DataFormats/MuonReco/interface/MuonChamberMatch.h"
0021 #include "DataFormats/Common/interface/Handle.h"
0022 #include "DataFormats/MuonReco/interface/MuonSelectors.h"
0023 #include "DataFormats/TrackReco/interface/HitPattern.h"
0024 #include "DataFormats/TrackReco/interface/Track.h"
0025 #include "DataFormats/GsfTrackReco/interface/GsfTrack.h"
0026 #include "DataFormats/Math/interface/deltaR.h"
0027 
0028 #include "RecoTauTag/RecoTau/interface/RecoTauMuonTools.h"
0029 
0030 #include <vector>
0031 #include <string>
0032 #include <iostream>
0033 #include <atomic>
0034 
0035 namespace {
0036 
0037   class PFRecoTauDiscriminationAgainstMuon2 final : public PFTauDiscriminationProducerBase {
0038   public:
0039     explicit PFRecoTauDiscriminationAgainstMuon2(const edm::ParameterSet& cfg)
0040         : PFTauDiscriminationProducerBase(cfg), moduleLabel_(cfg.getParameter<std::string>("@module_label")) {
0041       std::string discriminatorOption_string = cfg.getParameter<std::string>("discriminatorOption");
0042       int discOption;
0043       if (discriminatorOption_string == "loose")
0044         discOption = PFRecoTauDiscriminationAgainstMuonConfigSet::kLoose;
0045       else if (discriminatorOption_string == "medium")
0046         discOption = PFRecoTauDiscriminationAgainstMuonConfigSet::kMedium;
0047       else if (discriminatorOption_string == "tight")
0048         discOption = PFRecoTauDiscriminationAgainstMuonConfigSet::kTight;
0049       else if (discriminatorOption_string == "custom")
0050         discOption = PFRecoTauDiscriminationAgainstMuonConfigSet::kCustom;
0051       else
0052         throw edm::Exception(edm::errors::UnimplementedFeature)
0053             << " Invalid Configuration parameter 'discriminatorOption' = " << discriminatorOption_string << " !!\n";
0054       wpDef_ = std::make_unique<PFRecoTauDiscriminationAgainstMuonConfigSet>(
0055           discOption,
0056           cfg.getParameter<double>("HoPMin"),
0057           cfg.getParameter<int>("maxNumberOfMatches"),
0058           cfg.getParameter<bool>("doCaloMuonVeto"),
0059           cfg.getParameter<int>("maxNumberOfHitsLast2Stations"));
0060       srcMuons_ = cfg.getParameter<edm::InputTag>("srcMuons");
0061       Muons_token = consumes<reco::MuonCollection>(srcMuons_);
0062       dRmuonMatch_ = cfg.getParameter<double>("dRmuonMatch");
0063       dRmuonMatchLimitedToJetArea_ = cfg.getParameter<bool>("dRmuonMatchLimitedToJetArea");
0064       minPtMatchedMuon_ = cfg.getParameter<double>("minPtMatchedMuon");
0065       typedef std::vector<int> vint;
0066       maskMatchesDT_ = cfg.getParameter<vint>("maskMatchesDT");
0067       maskMatchesCSC_ = cfg.getParameter<vint>("maskMatchesCSC");
0068       maskMatchesRPC_ = cfg.getParameter<vint>("maskMatchesRPC");
0069       maskHitsDT_ = cfg.getParameter<vint>("maskHitsDT");
0070       maskHitsCSC_ = cfg.getParameter<vint>("maskHitsCSC");
0071       maskHitsRPC_ = cfg.getParameter<vint>("maskHitsRPC");
0072       verbosity_ = cfg.getParameter<int>("verbosity");
0073     }
0074     ~PFRecoTauDiscriminationAgainstMuon2() override {}
0075 
0076     void beginEvent(const edm::Event&, const edm::EventSetup&) override;
0077 
0078     double discriminate(const reco::PFTauRef&) const override;
0079 
0080     static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
0081 
0082   private:
0083     std::string moduleLabel_;
0084     std::unique_ptr<PFRecoTauDiscriminationAgainstMuonConfigSet> wpDef_;
0085     edm::InputTag srcMuons_;
0086     edm::Handle<reco::MuonCollection> muons_;
0087     edm::EDGetTokenT<reco::MuonCollection> Muons_token;
0088     double dRmuonMatch_;
0089     bool dRmuonMatchLimitedToJetArea_;
0090     double minPtMatchedMuon_;
0091     std::vector<int> maskMatchesDT_;
0092     std::vector<int> maskMatchesCSC_;
0093     std::vector<int> maskMatchesRPC_;
0094     std::vector<int> maskHitsDT_;
0095     std::vector<int> maskHitsCSC_;
0096     std::vector<int> maskHitsRPC_;
0097     static std::atomic<unsigned int> numWarnings_;
0098     static constexpr unsigned int maxWarnings_ = 3;
0099     int verbosity_;
0100   };
0101 
0102   std::atomic<unsigned int> PFRecoTauDiscriminationAgainstMuon2::numWarnings_{0};
0103 
0104   void PFRecoTauDiscriminationAgainstMuon2::beginEvent(const edm::Event& evt, const edm::EventSetup& es) {
0105     if (!srcMuons_.label().empty()) {
0106       evt.getByToken(Muons_token, muons_);
0107     }
0108   }
0109 
0110   double PFRecoTauDiscriminationAgainstMuon2::discriminate(const reco::PFTauRef& pfTau) const {
0111     const reco::PFCandidatePtr& pfCand = pfTau->leadPFChargedHadrCand();
0112     auto helper = PFRecoTauDiscriminationAgainstMuon2Helper(verbosity_,
0113                                                             moduleLabel_,
0114                                                             srcMuons_.label().empty(),
0115                                                             minPtMatchedMuon_,
0116                                                             dRmuonMatch_,
0117                                                             dRmuonMatchLimitedToJetArea_,
0118                                                             numWarnings_,
0119                                                             maxWarnings_,
0120                                                             maskMatchesDT_,
0121                                                             maskMatchesCSC_,
0122                                                             maskMatchesRPC_,
0123                                                             maskHitsDT_,
0124                                                             maskHitsCSC_,
0125                                                             maskHitsRPC_,
0126                                                             muons_,
0127                                                             pfTau,
0128                                                             pfCand);
0129     double discriminatorValue = helper.eval(*wpDef_, pfTau);
0130     if (verbosity_)
0131       edm::LogPrint("PFTauAgainstMuon2") << "--> returning discriminatorValue = " << discriminatorValue;
0132     return discriminatorValue;
0133   }
0134 
0135 }  // namespace
0136 
0137 void PFRecoTauDiscriminationAgainstMuon2::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0138   // pfRecoTauDiscriminationAgainstMuon2
0139   edm::ParameterSetDescription desc;
0140   desc.add<std::vector<int>>("maskHitsRPC",
0141                              {
0142                                  0,
0143                                  0,
0144                                  0,
0145                                  0,
0146                              });
0147   desc.add<int>("maxNumberOfHitsLast2Stations", 0);
0148   desc.add<std::vector<int>>("maskMatchesRPC",
0149                              {
0150                                  0,
0151                                  0,
0152                                  0,
0153                                  0,
0154                              });
0155   desc.add<std::vector<int>>("maskMatchesCSC",
0156                              {
0157                                  1,
0158                                  0,
0159                                  0,
0160                                  0,
0161                              });
0162   desc.add<std::vector<int>>("maskHitsCSC",
0163                              {
0164                                  0,
0165                                  0,
0166                                  0,
0167                                  0,
0168                              });
0169   desc.add<edm::InputTag>("PFTauProducer", edm::InputTag("pfRecoTauProducer"));
0170   desc.add<int>("verbosity", 0);
0171   desc.add<std::vector<int>>("maskMatchesDT",
0172                              {
0173                                  0,
0174                                  0,
0175                                  0,
0176                                  0,
0177                              });
0178   desc.add<double>("minPtMatchedMuon", 5.0);
0179   desc.add<bool>("dRmuonMatchLimitedToJetArea", false);
0180   {
0181     edm::ParameterSetDescription psd0;
0182     psd0.add<std::string>("BooleanOperator", "and");
0183     {
0184       edm::ParameterSetDescription psd1;
0185       psd1.add<double>("cut");              //, 0.5);
0186       psd1.add<edm::InputTag>("Producer");  //, edm::InputTag("pfRecoTauDiscriminationByLeadingTrackFinding"));
0187       psd0.addOptional<edm::ParameterSetDescription>("leadTrack", psd1);  // optional with default?
0188     }
0189     // Prediscriminants can be
0190     // Prediscriminants = noPrediscriminants,
0191     // as in RecoTauTag/Configuration/python/HPSPFTaus_cff.py
0192     //
0193     // and the definition is:
0194     // RecoTauTag/RecoTau/python/TauDiscriminatorTools.py
0195     // # Require no prediscriminants
0196     // noPrediscriminants = cms.PSet(
0197     //       BooleanOperator = cms.string("and"),
0198     //       )
0199     // -- so this is the minimum required definition
0200     // otherwise it inserts the leadTrack with Producer = InpuTag(...) and does not find the corresponding output during the run
0201     desc.add<edm::ParameterSetDescription>("Prediscriminants", psd0);
0202   }
0203   desc.add<std::vector<int>>("maskHitsDT",
0204                              {
0205                                  0,
0206                                  0,
0207                                  0,
0208                                  0,
0209                              });
0210   desc.add<double>("HoPMin", 0.2);
0211   desc.add<int>("maxNumberOfMatches", 0);
0212   desc.add<std::string>("discriminatorOption", "loose");
0213   desc.add<double>("dRmuonMatch", 0.3);
0214   desc.add<edm::InputTag>("srcMuons", edm::InputTag("muons"));
0215   desc.add<bool>("doCaloMuonVeto", false);
0216   descriptions.add("pfRecoTauDiscriminationAgainstMuon2", desc);
0217 }
0218 
0219 DEFINE_FWK_MODULE(PFRecoTauDiscriminationAgainstMuon2);