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Module to refit PV with beam-spot constraint with miniAOD inputs (for…
… lepton time-life info in nanoAOD with run-2 samples)
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PhysicsTools/PatAlgos/plugins/MiniAODRefitVertexProducer.cc
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| /** | ||
| \class MiniAODRefitVertexProducer | ||
| This producer is intended to take packedCandidates with tracks associated to | ||
| the PV and refit the PV (applying or not) BeamSpot constraint | ||
| \autor Michal Bluj, NCBJ Warsaw (and then others) | ||
| **/ | ||
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| #include "FWCore/Framework/interface/stream/EDProducer.h" | ||
| #include "FWCore/Framework/interface/Event.h" | ||
| #include "FWCore/Framework/interface/EventSetup.h" | ||
| #include "FWCore/Utilities/interface/InputTag.h" | ||
| #include "FWCore/ParameterSet/interface/ParameterSet.h" | ||
| #include "FWCore/ParameterSet/interface/ParameterSetDescription.h" | ||
| #include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h" | ||
| #include "DataFormats/PatCandidates/interface/PackedCandidate.h" | ||
| #include "DataFormats/TrackReco/interface/Track.h" | ||
| #include "DataFormats/VertexReco/interface/Vertex.h" | ||
| #include "DataFormats/BeamSpot/interface/BeamSpot.h" | ||
| #include "TrackingTools/TransientTrack/interface/TransientTrackBuilder.h" | ||
| #include "TrackingTools/Records/interface/TransientTrackRecord.h" | ||
| #include "RecoVertex/VertexPrimitives/interface/TransientVertex.h" | ||
| #include "RecoVertex/AdaptiveVertexFit/interface/AdaptiveVertexFitter.h" | ||
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| #include <memory> | ||
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| class MiniAODRefitVertexProducer : public edm::stream::EDProducer<> { | ||
| public: | ||
| explicit MiniAODRefitVertexProducer(const edm::ParameterSet&); | ||
| ~MiniAODRefitVertexProducer() override{}; | ||
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| void produce(edm::Event&, const edm::EventSetup&) override; | ||
| static void fillDescriptions(edm::ConfigurationDescriptions&); | ||
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| private: | ||
| //--- utility methods | ||
|
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| //--- configuration parameters | ||
| edm::EDGetTokenT<std::vector<pat::PackedCandidate> > srcCands_, srcLostTracks_, srcEleKfTracks_; | ||
| edm::EDGetTokenT<reco::VertexCollection> srcVertices_; | ||
| edm::EDGetTokenT<reco::BeamSpot> srcBeamSpot_; | ||
| edm::ESGetToken<TransientTrackBuilder, TransientTrackRecord> transTrackBuilderToken_; | ||
| bool useBeamSpot_; | ||
| bool useLostTracks_; | ||
| bool useEleKfTracks_; | ||
| }; | ||
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| MiniAODRefitVertexProducer::MiniAODRefitVertexProducer(const edm::ParameterSet& cfg) | ||
| : srcCands_(consumes<std::vector<pat::PackedCandidate> >(cfg.getParameter<edm::InputTag>("srcCands"))), | ||
| srcLostTracks_(consumes<std::vector<pat::PackedCandidate> >(cfg.getParameter<edm::InputTag>("srcLostTracks"))), | ||
| srcEleKfTracks_(consumes<std::vector<pat::PackedCandidate> >(cfg.getParameter<edm::InputTag>("srcEleKfTracks"))), | ||
| srcVertices_(consumes<reco::VertexCollection>(cfg.getParameter<edm::InputTag>("srcVertices"))), | ||
| srcBeamSpot_(consumes<reco::BeamSpot>(cfg.getParameter<edm::InputTag>("srcBeamSpot"))), | ||
| transTrackBuilderToken_(esConsumes(edm::ESInputTag("", "TransientTrackBuilder"))), | ||
| useBeamSpot_(cfg.getParameter<bool>("useBeamSpot")), | ||
| useLostTracks_(cfg.getParameter<bool>("useLostTracks")), | ||
| useEleKfTracks_(cfg.getParameter<bool>("useEleKfTracks")) { | ||
| produces<reco::VertexCollection>(); | ||
| } | ||
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| void MiniAODRefitVertexProducer::produce(edm::Event& evt, const edm::EventSetup& es) { | ||
| // Obtain collections | ||
| edm::Handle<std::vector<pat::PackedCandidate> > cands; | ||
| evt.getByToken(srcCands_, cands); | ||
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| edm::Handle<std::vector<pat::PackedCandidate> > lostTrackCands; | ||
| if (useLostTracks_) | ||
| evt.getByToken(srcLostTracks_, lostTrackCands); | ||
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| edm::Handle<std::vector<pat::PackedCandidate> > eleKfTrackCands; | ||
| if (useEleKfTracks_) | ||
| evt.getByToken(srcEleKfTracks_, eleKfTrackCands); | ||
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| edm::Handle<reco::VertexCollection> vertices; | ||
| evt.getByToken(srcVertices_, vertices); | ||
| const reco::Vertex& pv = vertices->front(); | ||
| size_t vtxIdx = 0; | ||
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| edm::Handle<reco::BeamSpot> beamSpot; | ||
| if (useBeamSpot_) | ||
| evt.getByToken(srcBeamSpot_, beamSpot); | ||
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| // Get transient track builder | ||
| const TransientTrackBuilder& transTrackBuilder = es.getData(transTrackBuilderToken_); | ||
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| // Output collection | ||
| auto outputVertices = std::make_unique<reco::VertexCollection>(); | ||
| outputVertices->reserve(1); | ||
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| // Create a new track collection for vertex refit | ||
| std::vector<reco::TransientTrack> transTracks; | ||
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| // loop over the PFCandidates | ||
| for (const auto& cand : (*cands)) { | ||
| if (cand.charge() == 0 || cand.vertexRef().isNull()) | ||
| continue; | ||
| if (cand.bestTrack() == nullptr) | ||
| continue; | ||
| auto key = cand.vertexRef().key(); | ||
| auto quality = cand.pvAssociationQuality(); | ||
| if (key != vtxIdx || | ||
| (quality != pat::PackedCandidate::UsedInFitTight && quality != pat::PackedCandidate::UsedInFitLoose)) | ||
| continue; | ||
| if (useEleKfTracks_ && std::abs(cand.pdgId()) == 11) | ||
| continue; | ||
| transTracks.push_back(transTrackBuilder.build(cand.bestTrack())); | ||
| } | ||
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| // loop over the lostTracks | ||
| if (useLostTracks_) { | ||
| for (const auto& cand : (*lostTrackCands)) { | ||
| if (cand.charge() == 0 || cand.vertexRef().isNull()) | ||
| continue; | ||
| if (cand.bestTrack() == nullptr) | ||
| continue; | ||
| auto key = cand.vertexRef().key(); | ||
| auto quality = cand.pvAssociationQuality(); | ||
| if (key != vtxIdx || | ||
| (quality != pat::PackedCandidate::UsedInFitTight && quality != pat::PackedCandidate::UsedInFitLoose)) | ||
| continue; | ||
| transTracks.push_back(transTrackBuilder.build(cand.bestTrack())); | ||
| } | ||
| } | ||
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| // loop over the electronKfTracks | ||
| if (useEleKfTracks_) { | ||
| for (const auto& cand : (*eleKfTrackCands)) { | ||
| if (cand.charge() == 0 || cand.vertexRef().isNull()) | ||
| continue; | ||
| if (cand.bestTrack() == nullptr) | ||
| continue; | ||
| auto key = cand.vertexRef().key(); | ||
| auto quality = cand.pvAssociationQuality(); | ||
| if (key != vtxIdx || | ||
| (quality != pat::PackedCandidate::UsedInFitTight && quality != pat::PackedCandidate::UsedInFitLoose)) | ||
| continue; | ||
| transTracks.push_back(transTrackBuilder.build(cand.bestTrack())); | ||
| } | ||
| } | ||
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| // Refit the vertex | ||
| TransientVertex transVtx; | ||
| reco::Vertex refitPV(pv); // initialized to the original PV | ||
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| bool fitOK = true; | ||
| if (transTracks.size() >= 3) { | ||
| AdaptiveVertexFitter avf; | ||
| avf.setWeightThreshold(0.1); // weight per track, allow almost every fit, else --> exception | ||
| try { | ||
| if (!useBeamSpot_) { | ||
| transVtx = avf.vertex(transTracks); | ||
| } else { | ||
| transVtx = avf.vertex(transTracks, *beamSpot); | ||
| } | ||
| } catch (...) { | ||
| fitOK = false; | ||
| } | ||
| } else | ||
| fitOK = false; | ||
| if (fitOK) { | ||
| refitPV = transVtx; | ||
| } | ||
|
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| outputVertices->push_back(refitPV); | ||
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| evt.put(std::move(outputVertices)); | ||
| } | ||
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| void MiniAODRefitVertexProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) { | ||
| // miniAODRefitVertexProducer | ||
| edm::ParameterSetDescription desc; | ||
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| desc.add<edm::InputTag>("srcVertices", edm::InputTag("offlineSlimmedPrimaryVertices")); | ||
| desc.add<edm::InputTag>("srcCands", edm::InputTag("packedPFCandidates")); | ||
| desc.add<edm::InputTag>("srcLostTracks", edm::InputTag("lostTracks")); | ||
| desc.add<edm::InputTag>("srcEleKfTracks", edm::InputTag("lostTracks:eleTracks")); | ||
| desc.add<edm::InputTag>("srcBeamSpot", edm::InputTag("offlineBeamSpot")); | ||
| desc.add<bool>("useBeamSpot", true); | ||
| desc.add<bool>("useLostTracks", true); | ||
| desc.add<bool>("useEleKfTracks", true) | ||
| ->setComment("Use collection of electron KF-tracks instead of GSF-tracks of electron PF-candidates"); | ||
|
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| descriptions.addWithDefaultLabel(desc); | ||
| } | ||
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| #include "FWCore/Framework/interface/MakerMacros.h" | ||
| DEFINE_FWK_MODULE(MiniAODRefitVertexProducer); |