L1HLTTauMatching.cc

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#include "RecoTauTag/HLTProducers/interface/L1HLTTauMatching.h"
#include "Math/GenVector/VectorUtil.h"
#include "DataFormats/L1Trigger/interface/L1JetParticle.h"
#include "DataFormats/L1Trigger/interface/L1JetParticleFwd.h"
#include "DataFormats/HLTReco/interface/TriggerTypeDefs.h"
#include "FWCore/Utilities/interface/EDMException.h"
#include "DataFormats/TauReco/interface/PFTau.h"

//
// class decleration
//
using namespace reco;
using namespace std;
using namespace edm;
using namespace l1extra;

L1HLTTauMatching::L1HLTTauMatching(const edm::ParameterSet& iConfig):
  jetSrc( consumes<PFTauCollection>(iConfig.getParameter<InputTag>("JetSrc") ) ),
  tauTrigger( consumes<trigger::TriggerFilterObjectWithRefs>(iConfig.getParameter<InputTag>("L1TauTrigger") ) ),
  mEt_Min( iConfig.getParameter<double>("EtMin") )
{  
  produces<PFTauCollection>();
}
L1HLTTauMatching::~L1HLTTauMatching(){ }

void L1HLTTauMatching::produce(edm::StreamID iSId, edm::Event& iEvent, const edm::EventSetup& iES) const
{
    
  using namespace edm;
  using namespace std;
  using namespace reco;
  using namespace trigger;
  using namespace l1extra;
    
  unique_ptr<PFTauCollection> tauL2jets(new PFTauCollection);
    
  double deltaR = 1.0;
  double matchingR = 0.5;
  //Getting HLT jets to be matched
  edm::Handle<PFTauCollection > tauJets;
  iEvent.getByToken( jetSrc, tauJets );

  //        std::cout <<"Size of input jet collection "<<tauJets->size()<<std::endl;
        
  edm::Handle<trigger::TriggerFilterObjectWithRefs> l1TriggeredTaus;
  iEvent.getByToken(tauTrigger,l1TriggeredTaus);
                
  vector<l1extra::L1JetParticleRef> tauCandRefVec;                                                
  vector<l1extra::L1JetParticleRef> jetCandRefVec;
  l1TriggeredTaus->getObjects( trigger::TriggerL1TauJet,tauCandRefVec);
  l1TriggeredTaus->getObjects( trigger::TriggerL1CenJet,jetCandRefVec);

  math::XYZPoint a(0.,0.,0.);
        
  for( unsigned int iL1Tau=0; iL1Tau <tauCandRefVec.size();iL1Tau++)
    {  
      for(unsigned int iJet=0;iJet<tauJets->size();iJet++)
    {
      //Find the relative L2TauJets, to see if it has been reconstructed
      const PFTau &  myJet = (*tauJets)[iJet];
      deltaR = ROOT::Math::VectorUtil::DeltaR(myJet.p4().Vect(), (tauCandRefVec[iL1Tau]->p4()).Vect());
      if(deltaR < matchingR ) {
        //       LeafCandidate myLC(myJet);
        if(myJet.leadPFChargedHadrCand().isNonnull()){
          a =  myJet.leadPFChargedHadrCand()->vertex();  
        }
        PFTau myPFTau(std::numeric_limits<int>::quiet_NaN(), myJet.p4(), a);
        if(myJet.pt() > mEt_Min) {
          //          tauL2LC->push_back(myLC);
          tauL2jets->push_back(myPFTau);
        }
        break;
      }
    }
    }  
  
  for(unsigned int iL1Tau=0; iL1Tau <jetCandRefVec.size();iL1Tau++)
    {  
      for(unsigned int iJet=0;iJet<tauJets->size();iJet++)
    {
      const PFTau &  myJet = (*tauJets)[iJet];
      //Find the relative L2TauJets, to see if it has been reconstructed
      deltaR = ROOT::Math::VectorUtil::DeltaR(myJet.p4().Vect(), (jetCandRefVec[iL1Tau]->p4()).Vect());
      if(deltaR < matchingR ) {
        //       LeafCandidate myLC(myJet);
        if(myJet.leadPFChargedHadrCand().isNonnull()){
          a =  myJet.leadPFChargedHadrCand()->vertex();  
        }
            
        PFTau myPFTau(std::numeric_limits<int>::quiet_NaN(), myJet.p4(),a);
        if(myJet.pt() > mEt_Min) {
          //          tauL2LC->push_back(myLC);
          tauL2jets->push_back(myPFTau);
        }
        break;
      }
    }
    }
  

  //std::cout <<"Size of L1HLT matched jets "<<tauL2jets->size()<<std::endl;

  iEvent.put(std::move(tauL2jets));
  // iEvent.put(std::move(tauL2LC));
}

void L1HLTTauMatching::fillDescriptions(edm::ConfigurationDescriptions& descriptions) 
{
  edm::ParameterSetDescription desc;
  desc.add<edm::InputTag>("L1TauTrigger",edm::InputTag("hltL1sDoubleIsoTau40er"))->setComment("Name of trigger filter");
  desc.add<edm::InputTag>("JetSrc",edm::InputTag("hltSelectedPFTausTrackPt1MediumIsolationReg"))->setComment("Input collection of PFTaus");
  desc.add<double>("EtMin",0.0)->setComment("Minimal pT of PFTau to match");
  descriptions.setComment("This module produces collection of PFTaus matched to L1ExtraTaus/Jets passing a HLT filter (Only p4 and vertex of returned PFTaus are set).");
  descriptions.add("L1HLTJetsMatching",desc);
}