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#ifndef PF_PU_AssoMapAlgos_h
#define PF_PU_AssoMapAlgos_h
/**\class PF_PU_AssoMap PF_PU_AssoMap.cc CommonTools/RecoUtils/plugins/PF_PU_AssoMap.cc
Description: Produces a map with association between tracks and their particular most probable vertex with a quality of this association
*/
//
// Original Author: Matthias Geisler,32 4-B20,+41227676487,
// $Id: PF_PU_AssoMapAlgos.h,v 1.7 2012/11/21 09:45:04 mgeisler Exp $
//
//
#include <string>
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/Common/interface/AssociationMap.h"
#include "DataFormats/Common/interface/OneToManyWithQuality.h"
#include "DataFormats/Common/interface/OneToManyWithQualityGeneric.h"
#include "DataFormats/Common/interface/View.h"
#include "DataFormats/Math/interface/Point3D.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "DataFormats/TrackReco/interface/TrackBase.h"
#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/VertexReco/interface/VertexFwd.h"
#include "DataFormats/EgammaCandidates/interface/Conversion.h"
#include "DataFormats/EgammaCandidates/interface/ConversionFwd.h"
#include "DataFormats/Candidate/interface/VertexCompositeCandidate.h"
#include "DataFormats/ParticleFlowReco/interface/PFDisplacedVertex.h"
#include "DataFormats/ParticleFlowReco/interface/PFDisplacedVertexFwd.h"
#include "DataFormats/BeamSpot/interface/BeamSpot.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
#include "Geometry/Records/interface/GlobalTrackingGeometryRecord.h"
//
// constants, enums and typedefs
//
const double kMass = 0.49765;
const double lamMass = 1.11568;
/*limits for the quality criteria*/
const double tw_90 = 1.e-2;
const double tw_70 = 1.e-1;
const double tw_50 = 2.e-1;
const double sec_70 = 5.;
const double sec_50 = 19.;
const double fin_70 = 1.e-1;
const double fin_50 = 3.e-1;
typedef edm::AssociationMap<edm::OneToManyWithQuality<reco::VertexCollection, reco::TrackCollection, int>>
TrackToVertexAssMap;
typedef edm::AssociationMap<edm::OneToManyWithQuality<reco::TrackCollection, reco::VertexCollection, int>>
VertexToTrackAssMap;
typedef std::pair<reco::TrackRef, int> TrackQualityPair;
typedef std::vector<TrackQualityPair> TrackQualityPairVector;
typedef std::pair<reco::VertexRef, int> VertexStepPair;
typedef std::pair<reco::VertexRef, TrackQualityPair> VertexTrackQuality;
typedef std::pair<reco::VertexRef, float> VertexPtsumPair;
typedef std::vector<VertexPtsumPair> VertexPtsumVector;
class PF_PU_AssoMapAlgos {
public:
//dedicated constructor for the algorithms
PF_PU_AssoMapAlgos(const edm::ParameterSet& iConfig, edm::ConsumesCollector&& iC) : PF_PU_AssoMapAlgos(iConfig, iC) {}
PF_PU_AssoMapAlgos(const edm::ParameterSet&, edm::ConsumesCollector&);
// virtual destructor needed when virtual functions declared
virtual ~PF_PU_AssoMapAlgos() noexcept(false) {}
//get all needed collections at the beginning
virtual void GetInputCollections(edm::Event&, const edm::EventSetup&);
//create the track-to-vertex and vertex-to-track maps in one go
std::pair<std::unique_ptr<TrackToVertexAssMap>, std::unique_ptr<VertexToTrackAssMap>> createMappings(
edm::Handle<reco::TrackCollection> trkcollH);
//create the track to vertex association map
std::unique_ptr<TrackToVertexAssMap> CreateTrackToVertexMap(edm::Handle<reco::TrackCollection>);
//create the vertex to track association map
std::unique_ptr<VertexToTrackAssMap> CreateVertexToTrackMap(edm::Handle<reco::TrackCollection>);
//function to sort the vertices in the AssociationMap by the sum of (pT - pT_Error)**2
std::unique_ptr<TrackToVertexAssMap> SortAssociationMap(TrackToVertexAssMap*, edm::Handle<reco::TrackCollection>);
protected:
//protected functions
//create helping vertex vector to remove associated vertices
std::vector<reco::VertexRef> CreateVertexVector(edm::Handle<reco::VertexCollection>);
//erase one vertex from the vertex vector
void EraseVertex(std::vector<reco::VertexRef>&, reco::VertexRef);
//find an association for a certain track
VertexStepPair FindAssociation(const reco::TrackRef&,
const std::vector<reco::VertexRef>&,
edm::ESHandle<MagneticField>,
edm::ESHandle<GlobalTrackingGeometry>,
edm::Handle<reco::BeamSpot>,
int);
//get the quality for a certain association
int DefineQuality(int, int, double);
private:
// private methods for internal usage
//function to find the closest vertex in z for a certain track
static reco::VertexRef FindClosestZ(const reco::TrackRef, const std::vector<reco::VertexRef>&, double tWeight = 0.);
//function to find the closest vertex in 3D for a certain track
static reco::VertexRef FindClosest3D(reco::TransientTrack, const std::vector<reco::VertexRef>&, double tWeight = 0.);
//function to calculate the deltaR between a vector and a vector connecting two points
static double dR(const math::XYZPoint&, const math::XYZVector&, edm::Handle<reco::BeamSpot>);
//function to filter the conversion collection
static std::unique_ptr<reco::ConversionCollection> GetCleanedConversions(edm::Handle<reco::ConversionCollection>,
edm::Handle<reco::BeamSpot>,
bool);
//function to find out if the track comes from a gamma conversion
static bool ComesFromConversion(const reco::TrackRef, const reco::ConversionCollection&, reco::Conversion*);
static reco::VertexRef FindConversionVertex(const reco::TrackRef,
const reco::Conversion&,
edm::ESHandle<MagneticField>,
edm::ESHandle<GlobalTrackingGeometry>,
edm::Handle<reco::BeamSpot>,
const std::vector<reco::VertexRef>&,
double);
//function to filter the Kshort collection
static std::unique_ptr<reco::VertexCompositeCandidateCollection> GetCleanedKshort(
edm::Handle<reco::VertexCompositeCandidateCollection>, edm::Handle<reco::BeamSpot>, bool);
//function to filter the Lambda collection
static std::unique_ptr<reco::VertexCompositeCandidateCollection> GetCleanedLambda(
edm::Handle<reco::VertexCompositeCandidateCollection>, edm::Handle<reco::BeamSpot>, bool);
//function to find out if the track comes from a V0 decay
static bool ComesFromV0Decay(const reco::TrackRef,
const reco::VertexCompositeCandidateCollection&,
const reco::VertexCompositeCandidateCollection&,
reco::VertexCompositeCandidate*);
static reco::VertexRef FindV0Vertex(const reco::TrackRef,
const reco::VertexCompositeCandidate&,
edm::ESHandle<MagneticField>,
edm::ESHandle<GlobalTrackingGeometry>,
edm::Handle<reco::BeamSpot>,
const std::vector<reco::VertexRef>&,
double);
//function to filter the nuclear interaction collection
static std::unique_ptr<reco::PFDisplacedVertexCollection> GetCleanedNI(edm::Handle<reco::PFDisplacedVertexCollection>,
edm::Handle<reco::BeamSpot>,
bool);
//function to find out if the track comes from a nuclear interaction
static bool ComesFromNI(const reco::TrackRef, const reco::PFDisplacedVertexCollection&, reco::PFDisplacedVertex*);
static reco::VertexRef FindNIVertex(const reco::TrackRef,
const reco::PFDisplacedVertex&,
edm::ESHandle<MagneticField>,
edm::ESHandle<GlobalTrackingGeometry>,
edm::Handle<reco::BeamSpot>,
const std::vector<reco::VertexRef>&,
double);
//function to find the vertex with the highest TrackWeight for a certain track
template <typename TREF>
static reco::VertexRef TrackWeightAssociation(const TREF&, const std::vector<reco::VertexRef>&);
// ----------member data ---------------------------
int input_MaxNumAssociations_;
edm::EDGetTokenT<reco::VertexCollection> token_VertexCollection_;
edm::Handle<reco::VertexCollection> vtxcollH;
edm::EDGetTokenT<reco::BeamSpot> token_BeamSpot_;
edm::Handle<reco::BeamSpot> beamspotH;
const edm::ESGetToken<MagneticField, IdealMagneticFieldRecord> token_bField_;
edm::ESHandle<MagneticField> bFieldH;
const edm::ESGetToken<GlobalTrackingGeometry, GlobalTrackingGeometryRecord> token_TrackingGeometry_;
edm::ESHandle<GlobalTrackingGeometry> trackingGeometryH;
bool input_doReassociation_;
bool cleanedColls_;
edm::EDGetTokenT<reco::ConversionCollection> ConversionsCollectionToken_;
edm::Handle<reco::ConversionCollection> convCollH;
std::unique_ptr<reco::ConversionCollection> cleanedConvCollP;
edm::EDGetTokenT<reco::VertexCompositeCandidateCollection> KshortCollectionToken_;
edm::Handle<reco::VertexCompositeCandidateCollection> vertCompCandCollKshortH;
std::unique_ptr<reco::VertexCompositeCandidateCollection> cleanedKshortCollP;
edm::EDGetTokenT<reco::VertexCompositeCandidateCollection> LambdaCollectionToken_;
edm::Handle<reco::VertexCompositeCandidateCollection> vertCompCandCollLambdaH;
std::unique_ptr<reco::VertexCompositeCandidateCollection> cleanedLambdaCollP;
edm::EDGetTokenT<reco::PFDisplacedVertexCollection> NIVertexCollectionToken_;
edm::Handle<reco::PFDisplacedVertexCollection> displVertexCollH;
std::unique_ptr<reco::PFDisplacedVertexCollection> cleanedNICollP;
int input_FinalAssociation_;
bool ignoremissingpfcollection_;
bool missingColls; // is true if there is a diplaced vertex collection in the event
double input_nTrack_;
int maxNumWarnings_; // CV: print Warning if TrackExtra objects don't exist in input file,
int numWarnings_; // but only a few times
};
#endif
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