| 1 | #ifndef VertexFinder4D_h
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| 2 | #define VertexFinder4D_h
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| 3 |
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| 4 | /** \class VertexFinder4D
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| 5 | *
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| 6 | * Cluster vertices from tracks using deterministic annealing and timing information
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| 7 | *
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| 8 | * \authors M. Selvaggi
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| 9 | *
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| 10 | */
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| 11 |
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| 12 |
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| 13 |
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| 14 | #include "classes/DelphesModule.h"
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| 15 | #include "classes/DelphesClasses.h"
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| 16 | #include <utility>
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| 17 | #include <algorithm>
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| 18 | #include <stdexcept>
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| 19 | #include <iostream>
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| 20 | #include <vector>
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| 21 | #include <unordered_map>
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| 22 |
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| 23 | using namespace std;
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| 24 |
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| 25 | class TObjArray;
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| 26 | class Candidate;
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| 27 | class TVector3;
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| 28 |
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| 29 | class VertexFinder4D: public DelphesModule
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| 30 | {
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| 31 | public:
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| 32 |
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| 33 | VertexFinder4D();
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| 34 | ~VertexFinder4D();
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| 35 |
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| 36 | void Init();
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| 37 | void Process();
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| 38 | void Finish();
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| 39 |
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| 40 | struct track_t{
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| 41 | double z; // z-coordinate at point of closest approach to the beamline
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| 42 | double t; // t-coordinate at point of closest approach to the beamline
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| 43 | double dz2; // square of the error of z(pca)
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| 44 | double dtz; // covariance of z-t
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| 45 | double dt2; // square of the error of t(pca)
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| 46 | //const reco::TransientTrack* tt; // a pointer to the Transient Track
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| 47 | Candidate* tt; // a pointer to the Candidate Track
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| 48 | double Z; // Z[i] for DA clustering
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| 49 | double pi; // track weight
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| 50 | };
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| 51 |
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| 52 |
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| 53 | struct vertex_t{
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| 54 | double z; // z coordinate
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| 55 | double t; // t coordinate
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| 56 | double pk; // vertex weight for "constrained" clustering
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| 57 | // --- temporary numbers, used during update
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| 58 | double ei;
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| 59 | double sw;
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| 60 | double swz;
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| 61 | double swt;
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| 62 | double se;
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| 63 | // ---for Tc
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| 64 | double swE;
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| 65 | double Tc;
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| 66 | };
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| 67 |
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| 68 |
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| 69 |
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| 70 | void clusterize(const TObjArray & tracks, TObjArray & clusters);
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| 71 |
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| 72 | std::vector< Candidate >
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| 73 | vertices(const TObjArray & tracks, const int verbosity=0);
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| 74 |
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| 75 | std::vector<track_t> fill(const TObjArray & tracks)const;
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| 76 |
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| 77 | bool split( double beta,
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| 78 | std::vector<track_t> & tks,
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| 79 | std::vector<vertex_t> & y,
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| 80 | double threshold ) const;
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| 81 |
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| 82 | double update( double beta,
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| 83 | std::vector<track_t> & tks,
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| 84 | std::vector<vertex_t> & y ) const;
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| 85 |
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| 86 | double update(double beta,
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| 87 | std::vector<track_t> & tks,
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| 88 | std::vector<vertex_t> & y,
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| 89 | double & )const;
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| 90 |
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| 91 | void dump(const double beta, const std::vector<vertex_t> & y, const std::vector<track_t> & tks, const int verbosity=0) const;
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| 92 | bool merge(std::vector<vertex_t> &,int ) const;
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| 93 | bool merge(std::vector<vertex_t> &,double & ) const;
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| 94 | bool purge(std::vector<vertex_t> &, std::vector<track_t> & , double &, const double ) const;
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| 95 |
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| 96 | void splitAll( std::vector<vertex_t> & y ) const;
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| 97 |
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| 98 | double beta0(const double betamax,
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| 99 | std::vector<track_t> & tks,
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| 100 | std::vector<vertex_t> & y )const;
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| 101 |
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| 102 | double Eik(const track_t & t, const vertex_t & k)const;
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| 103 |
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| 104 |
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| 105 | private:
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| 106 |
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| 107 | Double_t fSigma;
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| 108 | Double_t fMinPT;
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| 109 | Double_t fMaxEta;
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| 110 | Double_t fSeedMinPT;
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| 111 | Int_t fMinNDF;
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| 112 | Int_t fGrowSeeds;
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| 113 | Bool_t fVerbose;
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| 114 |
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| 115 | bool useTc_;
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| 116 | float vertexSize_;
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| 117 | int maxIterations_;
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| 118 | double coolingFactor_;
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| 119 | float betamax_;
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| 120 | float betastop_;
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| 121 | double dzCutOff_;
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| 122 | double d0CutOff_;
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| 123 | double dtCutOff_; // for when the beamspot has time
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| 124 |
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| 125 | TObjArray *fInputArray;
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| 126 | TIterator *fItInputArray;
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| 127 |
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| 128 | TObjArray *fOutputArray;
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| 129 | TObjArray *fVertexOutputArray;
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| 130 |
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| 131 | ClassDef(VertexFinder4D, 1)
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| 132 | };
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| 133 |
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| 134 | #endif
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