HLTProducers/src/L1THLTTauMatching.cc

0001 #include "RecoTauTag/HLTProducers/interface/L1THLTTauMatching.h"
0002 #include "Math/GenVector/VectorUtil.h"
0003 #include "DataFormats/HLTReco/interface/TriggerTypeDefs.h"
0004 #include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
0005 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0006 #include "FWCore/Utilities/interface/EDMException.h"
0007 #include "FWCore/Utilities/interface/InputTag.h"
0008 #include "DataFormats/Common/interface/Handle.h"
0009 #include "DataFormats/Common/interface/RefVector.h"
0010 #include "DataFormats/L1Trigger/interface/Tau.h"
0011 #include "DataFormats/TauReco/interface/PFTau.h"
0012
0013 //
0014 // class declaration
0015 //
0016 using namespace reco;
0017 using namespace std;
0018 using namespace edm;
0019 using namespace trigger;
0020
0021 L1THLTTauMatching::L1THLTTauMatching(const edm::ParameterSet& iConfig)
0022     : jetSrc(consumes<PFTauCollection>(iConfig.getParameter<InputTag>("JetSrc"))),
0023       tauTrigger(consumes<trigger::TriggerFilterObjectWithRefs>(iConfig.getParameter<InputTag>("L1TauTrigger"))),
0024       mEt_Min(iConfig.getParameter<double>("EtMin")),
0025       reduceTauContent(iConfig.getParameter<bool>("ReduceTauContent")),
0026       keepOriginalVertex(iConfig.getParameter<bool>("KeepOriginalVertex")) {
0027   produces<PFTauCollection>();
0028 }
0029
0030 void L1THLTTauMatching::produce(edm::StreamID iSId, edm::Event& iEvent, const edm::EventSetup& iES) const {
0031   unique_ptr<PFTauCollection> tauL2jets(new PFTauCollection);
0032
0033   constexpr double matchingR2 = 0.5 * 0.5;
0034
0035   // Getting HLT jets to be matched
0036   edm::Handle<PFTauCollection> tauJets;
0037   iEvent.getByToken(jetSrc, tauJets);
0038
0039   edm::Handle<trigger::TriggerFilterObjectWithRefs> l1TriggeredTaus;
0040   iEvent.getByToken(tauTrigger, l1TriggeredTaus);
0041
0042   l1t::TauVectorRef tauCandRefVec;
0043   l1TriggeredTaus->getObjects(trigger::TriggerL1Tau, tauCandRefVec);
0044
0045   math::XYZPoint a(0., 0., 0.);
0046
0047   for (unsigned int iL1Tau = 0; iL1Tau < tauCandRefVec.size(); iL1Tau++) {
0048     for (unsigned int iJet = 0; iJet < tauJets->size(); iJet++) {
0049       // Find the relative L2TauJets, to see if it has been reconstructed
0050       const PFTau& myJet = (*tauJets)[iJet];
0051       double deltaR2 = ROOT::Math::VectorUtil::DeltaR2(myJet.p4().Vect(), (tauCandRefVec[iL1Tau]->p4()).Vect());
0052       if (deltaR2 < matchingR2) {
0053         if (myJet.leadChargedHadrCand().isNonnull()) {
0054           a = myJet.leadChargedHadrCand()->vertex();
0055         }
0056
0057         auto myPFTau =
0058             reduceTauContent ? PFTau(std::numeric_limits<int>::quiet_NaN(), myJet.p4(), myJet.vertex()) : PFTau(myJet);
0059
0060         if (!keepOriginalVertex) {
0061           myPFTau.setVertex(a);
0062         }
0063
0064         if (myPFTau.pt() > mEt_Min) {
0065           tauL2jets->push_back(myJet);
0066         }
0067         break;
0068       }
0069     }
0070   }
0071
0072   iEvent.put(std::move(tauL2jets));
0073 }
0074
0075 void L1THLTTauMatching::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0076   edm::ParameterSetDescription desc;
0077   desc.add<edm::InputTag>("L1TauTrigger", edm::InputTag("hltL1sDoubleIsoTau40er"))
0078       ->setComment("Name of trigger filter");
0079   desc.add<edm::InputTag>("JetSrc", edm::InputTag("hltSelectedPFTausTrackPt1MediumIsolationReg"))
0080       ->setComment("Input collection of PFTaus");
0081   desc.add<double>("EtMin", 0.0)->setComment("Minimal pT of PFTau to match");
0082   desc.add<bool>("ReduceTauContent", true)->setComment("Should produce taus with reduced content (Only p4 and vertex)");
0083   desc.add<bool>("KeepOriginalVertex", false)
0084       ->setComment("Should use original vertex instead of setting the vertex to that of the leading charged hadron");
0085   descriptions.setComment("This module produces collection of PFTaus matched to L1 Taus / Jets passing a HLT filter.");
0086   descriptions.add("L1THLTTauMatching", desc);
0087 }
0088
0089 #include "FWCore/Framework/interface/MakerMacros.h"
0090 DEFINE_FWK_MODULE(L1THLTTauMatching);