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00001 // -*- C++ -*-
00002 //
00003 // Package:    METAlgorithms
00004 // Class:      PFSpecificAlgo
00005 // 
00006 // Original Authors:  R. Remington (UF), R. Cavanaugh (UIC/Fermilab)
00007 //          Created:  October 27, 2008
00008 // $Id: PFSpecificAlgo.cc,v 1.13 2012/06/10 16:37:16 sakuma Exp $
00009 //
00010 //
00011 //____________________________________________________________________________||
00012 #include "RecoMET/METAlgorithms/interface/PFSpecificAlgo.h"
00013 #include "RecoMET/METAlgorithms/interface/SignAlgoResolutions.h"
00014 #include "DataFormats/ParticleFlowCandidate/interface/PFCandidate.h"
00015 
00016 //____________________________________________________________________________||
00017 using namespace reco;
00018 
00019 //____________________________________________________________________________||
00020 reco::PFMET PFSpecificAlgo::addInfo(edm::Handle<edm::View<Candidate> > PFCandidates, CommonMETData met)
00021 {
00022   SpecificPFMETData specific = mkSpecificPFMETData(PFCandidates);
00023 
00024   const LorentzVector p4(met.mex , met.mey, 0.0, met.met);
00025   const Point vtx(0.0,0.0,0.0);
00026   PFMET pfMET(specific, met.sumet, p4, vtx );
00027 
00028   if(doSignificance) pfMET.setSignificanceMatrix(mkSignifMatrix(PFCandidates));
00029 
00030   return pfMET;
00031 }
00032 
00033 //____________________________________________________________________________||
00034 void PFSpecificAlgo::runSignificance(metsig::SignAlgoResolutions &resolutions, edm::Handle<edm::View<reco::PFJet> > jets)
00035 {
00036   doSignificance = true;
00037   pfsignalgo_.setResolutions( &resolutions );
00038   pfsignalgo_.addPFJets(jets);
00039 }
00040 
00041 //____________________________________________________________________________||
00042 void PFSpecificAlgo::initializeSpecificPFMETData(SpecificPFMETData &specific)
00043 {
00044   specific.NeutralEMFraction = 0.0;
00045   specific.NeutralHadFraction = 0.0;
00046   specific.ChargedEMFraction = 0.0;
00047   specific.ChargedHadFraction = 0.0;
00048   specific.MuonFraction = 0.0;
00049   specific.Type6Fraction = 0.0;
00050   specific.Type7Fraction = 0.0;
00051 }
00052 
00053 //____________________________________________________________________________||
00054 SpecificPFMETData PFSpecificAlgo::mkSpecificPFMETData(edm::Handle<edm::View<reco::Candidate> > &PFCandidates)
00055 {
00056   if(!PFCandidates->size())
00057   {
00058     SpecificPFMETData specific;
00059     initializeSpecificPFMETData(specific);
00060     return specific;
00061   } 
00062 
00063   double NeutralEMEt = 0.0;
00064   double NeutralHadEt = 0.0;
00065   double ChargedEMEt = 0.0;
00066   double ChargedHadEt = 0.0;
00067   double MuonEt = 0.0;
00068   double type6Et = 0.0;
00069   double type7Et = 0.0;
00070 
00071   for( edm::View<reco::Candidate>::const_iterator iParticle = (PFCandidates.product())->begin(); iParticle != (PFCandidates.product())->end(); ++iParticle )
00072     {   
00073       const PFCandidate* pfCandidate = dynamic_cast<const PFCandidate*> (&(*iParticle));
00074       if (!pfCandidate) continue;
00075       const double theta = pfCandidate->theta();
00076       const double e     = pfCandidate->energy();
00077       const double et    = e*sin(theta);
00078 
00079       if (pfCandidate->particleId() == 1) ChargedHadEt += et;
00080       if (pfCandidate->particleId() == 2) ChargedEMEt += et;
00081       if (pfCandidate->particleId() == 3) MuonEt += et;
00082       if (pfCandidate->particleId() == 4) NeutralEMEt += et;
00083       if (pfCandidate->particleId() == 5) NeutralHadEt += et;
00084       if (pfCandidate->particleId() == 6) type6Et += et;
00085       if (pfCandidate->particleId() == 7) type7Et += et;
00086 
00087 
00088     }
00089 
00090   const double Et_total = NeutralEMEt + NeutralHadEt + ChargedEMEt + ChargedHadEt + MuonEt + type6Et + type7Et;
00091   SpecificPFMETData specific;
00092   initializeSpecificPFMETData(specific);
00093   if (Et_total!=0.0)
00094   {
00095     specific.NeutralEMFraction = NeutralEMEt/Et_total;
00096     specific.NeutralHadFraction = NeutralHadEt/Et_total;
00097     specific.ChargedEMFraction = ChargedEMEt/Et_total;
00098     specific.ChargedHadFraction = ChargedHadEt/Et_total;
00099     specific.MuonFraction = MuonEt/Et_total;
00100     specific.Type6Fraction = type6Et/Et_total;
00101     specific.Type7Fraction = type7Et/Et_total;
00102   }
00103   return specific;
00104 }
00105 
00106 //____________________________________________________________________________||
00107 TMatrixD PFSpecificAlgo::mkSignifMatrix(edm::Handle<edm::View<reco::Candidate> > &PFCandidates)
00108 {
00109   pfsignalgo_.useOriginalPtrs(PFCandidates.id());
00110   for(edm::View<reco::Candidate>::const_iterator iParticle = (PFCandidates.product())->begin(); iParticle != (PFCandidates.product())->end(); ++iParticle )
00111     {   
00112       const PFCandidate* pfCandidate = dynamic_cast<const PFCandidate*> (&(*iParticle));
00113       if (!pfCandidate) continue;
00114       reco::CandidatePtr dau(PFCandidates, iParticle - PFCandidates->begin());
00115       if(dau.isNull()) continue;
00116       if(!dau.isAvailable()) continue;
00117       reco::PFCandidatePtr pf(dau.id(), pfCandidate, dau.key());
00118       pfsignalgo_.addPFCandidate(pf);
00119     }
00120   return pfsignalgo_.getSignifMatrix();
00121 }
00122 
00123 //____________________________________________________________________________||
/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/RecoMET/METAlgorithms/src/PFSpecificAlgo.cc
