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RecoEgamma/EgammaElectronAlgos/interface/GsfElectronTools.h
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| #ifndef RecoEgamma_EgammaElectronAlgos_GsfElectronTools_h | ||
| #define RecoEgamma_EgammaElectronAlgos_GsfElectronTools_h | ||
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| #include "DataFormats/Common/interface/Handle.h" | ||
| #include "DataFormats/GsfTrackReco/interface/GsfTrackFwd.h" | ||
| #include "DataFormats/TrackReco/interface/TrackFwd.h" | ||
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| namespace GsfElectronTools { | ||
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| // From Puneeth Kalavase : returns the CTF track that has the highest fraction | ||
| // of shared hits in Pixels and the inner strip tracker with the electron Track | ||
| std::pair<reco::TrackRef,float> getClosestCtfToGsf( reco::GsfTrackRef const&, | ||
| edm::Handle<reco::TrackCollection> const& ctfTracksH ); | ||
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| } | ||
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| #endif |
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| #include "DataFormats/EgammaCandidates/interface/GsfElectronCoreFwd.h" | ||
| #include "DataFormats/EgammaCandidates/interface/GsfElectronCore.h" | ||
| #include "DataFormats/ParticleFlowReco/interface/GsfPFRecTrack.h" | ||
| #include "DataFormats/GsfTrackReco/interface/GsfTrack.h" | ||
| #include "DataFormats/EgammaReco/interface/ElectronSeedFwd.h" | ||
| #include "DataFormats/EgammaReco/interface/ElectronSeed.h" | ||
| #include "RecoEgamma/EgammaElectronAlgos/interface/GsfElectronTools.h" | ||
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| namespace GsfElectronTools { | ||
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| using namespace reco ; | ||
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| //======================================================================================= | ||
| // Code from Puneeth Kalavase | ||
| //======================================================================================= | ||
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| std::pair<TrackRef,float> getClosestCtfToGsf( GsfTrackRef const& gsfTrackRef, | ||
| edm::Handle<reco::TrackCollection> const& ctfTracksH ) | ||
| { | ||
| float maxFracShared = 0; | ||
| TrackRef ctfTrackRef = TrackRef() ; | ||
| const TrackCollection * ctfTrackCollection = ctfTracksH.product() ; | ||
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| // get the Hit Pattern for the gsfTrack | ||
| const HitPattern& gsfHitPattern = gsfTrackRef->hitPattern(); | ||
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| unsigned int counter = 0; | ||
| for (auto ctfTkIter = ctfTrackCollection->begin(); | ||
| ctfTkIter != ctfTrackCollection->end() ; ctfTkIter++, counter++ ) | ||
| { | ||
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| double dEta = gsfTrackRef->eta() - ctfTkIter->eta(); | ||
| double dPhi = gsfTrackRef->phi() - ctfTkIter->phi(); | ||
| double pi = acos(-1.); | ||
| if(std::abs(dPhi) > pi) dPhi = 2*pi - std::abs(dPhi); | ||
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| // dont want to look at every single track in the event! | ||
| if(sqrt(dEta*dEta + dPhi*dPhi) > 0.3) continue; | ||
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| unsigned int shared = 0 ; | ||
| int gsfHitCounter = 0 ; | ||
| int numGsfInnerHits = 0 ; | ||
| int numCtfInnerHits = 0 ; | ||
| // get the CTF Track Hit Pattern | ||
| const HitPattern& ctfHitPattern = ctfTkIter->hitPattern(); | ||
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| for ( auto elHitsIt = gsfTrackRef->recHitsBegin() ; | ||
| elHitsIt != gsfTrackRef->recHitsEnd() ; | ||
| elHitsIt++, gsfHitCounter++ ) | ||
| { | ||
| if(!((**elHitsIt).isValid())) //count only valid Hits | ||
| { continue ; } | ||
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| // look only in the pixels/TIB/TID | ||
| uint32_t gsfHit = gsfHitPattern.getHitPattern(HitPattern::TRACK_HITS, gsfHitCounter); | ||
| if (!(HitPattern::pixelHitFilter(gsfHit) || | ||
| HitPattern::stripTIBHitFilter(gsfHit) || | ||
| HitPattern::stripTIDHitFilter(gsfHit))) | ||
| { continue ; } | ||
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| numGsfInnerHits++ ; | ||
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| int ctfHitsCounter = 0 ; | ||
| numCtfInnerHits = 0 ; | ||
| for ( auto ctfHitsIt = ctfTkIter->recHitsBegin() ; | ||
| ctfHitsIt != ctfTkIter->recHitsEnd() ; | ||
| ctfHitsIt++, ctfHitsCounter++ ) | ||
| { | ||
| if(!((**ctfHitsIt).isValid())) //count only valid Hits! | ||
| { continue ; } | ||
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| uint32_t ctfHit = ctfHitPattern.getHitPattern(HitPattern::TRACK_HITS, ctfHitsCounter); | ||
| if(!(HitPattern::pixelHitFilter(ctfHit) || | ||
| HitPattern::stripTIBHitFilter(ctfHit) || | ||
| HitPattern::stripTIDHitFilter(ctfHit))) | ||
| { continue ; } | ||
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| numCtfInnerHits++ ; | ||
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| if( (**elHitsIt).sharesInput(&(**ctfHitsIt),TrackingRecHit::all) ) | ||
| { | ||
| shared++ ; | ||
| break ; | ||
| } | ||
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| } //ctfHits iterator | ||
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| } //gsfHits iterator | ||
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| if ((numGsfInnerHits==0)||(numCtfInnerHits==0)) | ||
| { continue ; } | ||
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| if ( static_cast<float>(shared)/std::min(numGsfInnerHits,numCtfInnerHits) > maxFracShared ) | ||
| { | ||
| maxFracShared = static_cast<float>(shared)/std::min(numGsfInnerHits, numCtfInnerHits); | ||
| ctfTrackRef = TrackRef(ctfTracksH,counter); | ||
| } | ||
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| } //ctfTrack iterator | ||
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| return make_pair(ctfTrackRef,maxFracShared) ; | ||
| } | ||
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| } |
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