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lethuill |
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#include "../interface/LeptonAnalyzer.h"
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using namespace std;
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using namespace reco;
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using namespace edm;
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LeptonAnalyzer::LeptonAnalyzer(const edm::ParameterSet& producersNames):verbosity_(0),dummyVertex_(false),trackBuilder_(),primaryVertex_(0),vertexPoint_(0)
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{
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dataType_ = producersNames.getUntrackedParameter<string>("dataType","unknown");
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vertexProducer_ = producersNames.getParameter<edm::InputTag>("primaryVertexProducer");
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}
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LeptonAnalyzer::LeptonAnalyzer(const edm::ParameterSet& producersNames, int verbosity):verbosity_(verbosity),dummyVertex_(false),trackBuilder_(),primaryVertex_(0),vertexPoint_(0)
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{
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dataType_ = producersNames.getUntrackedParameter<string>("dataType","unknown");
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vertexProducer_ = producersNames.getParameter<edm::InputTag>("primaryVertexProducer");
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}
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LeptonAnalyzer::~LeptonAnalyzer()
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{
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if (dummyVertex_) delete primaryVertex_;
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if (vertexPoint_ != 0) delete vertexPoint_;
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}
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void LeptonAnalyzer::initIPCalculator(const edm::Event& iEvent, const edm::EventSetup& iSetup, TRootEvent* rootEvent)
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{
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// Get the B-field
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edm::ESHandle<MagneticField> B;
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iSetup.get<IdealMagneticFieldRecord>().get( B );
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// Get the geometry
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edm::ESHandle<GlobalTrackingGeometry> theTrackingGeometry;
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iSetup.get<GlobalTrackingGeometryRecord>().get(theTrackingGeometry);
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// get the track builder
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iSetup.get<TransientTrackRecord>().get("TransientTrackBuilder",trackBuilder_);
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// Get primary vertex collection
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edm::Handle< reco::VertexCollection > recoPVCollection;
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iEvent.getByLabel(vertexProducer_, recoPVCollection);
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if ( recoPVCollection->size()==0 )
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{
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cout << "***** ERROR in LeptonAnalyzer::initIPCalculator() - No reco::Vertex for this event - Will use dummy vertex *****" << endl;
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reco::Vertex::Point point(0,0,0);
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reco::Vertex::Error error;
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error(0,0) = 0.0015*0.0015;
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error(1,1) = 0.0015*0.0015;
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error(2,2) = 15.*15.;
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primaryVertex_ = new reco::Vertex(point,error,1,1,1);
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dummyVertex_ = true;
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}
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else if ( rootEvent->primaryVertexIndex()>=int(recoPVCollection->size()) )
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{
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cout << "***** ERROR in LeptonAnalyzer::initIPCalculator() - Selected primary vertex not found in reco::Vertex collection - Will use first reco::Vertex *****" << endl;
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primaryVertex_ = & ((*recoPVCollection)[0]);
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}
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else if ( rootEvent->primaryVertexIndex()<0 )
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{
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cout << "***** ERROR in LeptonAnalyzer::initIPCalculator() - No Primary vertex was selected in reco::Vertex collection - Will use first reco::Vertex *****" << endl;
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primaryVertex_ = & ((*recoPVCollection)[0]);
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}
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else
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{
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primaryVertex_ = & ((*recoPVCollection)[rootEvent->primaryVertexIndex()]);
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}
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vertexPoint_ = new GlobalPoint(primaryVertex_->position().x(),primaryVertex_->position().y(),primaryVertex_->position().z());
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}
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float LeptonAnalyzer::IP3DSignificance(const reco::TransientTrack& track)
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{
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// FIXME - transtrack passee en argument
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//reco::TrackRef mutrack;
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//reco::TransientTrack transtrack = trackBuilder_->build( mutrack ) ;
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const TrajectoryStateOnSurface tsos = track.stateOnSurface(*vertexPoint_);
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float significance = -9999.;
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if (!tsos.isValid())
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{
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significance = -8888.;
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}
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else
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{
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std::pair<bool,Measurement1D> muIPpair;
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muIPpair = IPTools::signedImpactParameter3D(tsos, tsos.globalDirection(), *primaryVertex_);
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if (muIPpair.first)
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{
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significance = muIPpair.second.significance();
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//cout << "3DIP Significance = " << significance << endl;
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}
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else
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{
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significance = -7777.;
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}
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}
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return significance;
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}
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