| 1 | #ifndef VertexFinderDA4D_h
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| 2 | #define VertexFinderDA4D_h
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| 3 |
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| 4 | /** \class VertexFinderDA4D
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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, L. Gray
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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 | #include "classes/DelphesModule.h"
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| 14 |
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| 15 | #include <vector>
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| 16 |
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| 17 | class TObjArray;
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| 18 | class TIterator;
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| 19 | class Candidate;
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| 20 |
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| 21 | class VertexFinderDA4D: public DelphesModule
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| 22 | {
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| 23 | public:
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| 24 |
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| 25 | VertexFinderDA4D();
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| 26 | ~VertexFinderDA4D();
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| 27 |
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| 28 | void Init();
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| 29 | void Process();
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| 30 | void Finish();
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| 31 |
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| 32 | struct track_t
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| 33 | {
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| 34 | double z; // z-coordinate at point of closest approach to the beamline
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| 35 | double t; // t-coordinate at point of closest approach to the beamline
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| 36 | double dz2; // square of the error of z(pca)
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| 37 | double dtz; // covariance of z-t
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| 38 | double dt2; // square of the error of t(pca)
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| 39 | Candidate* tt; // a pointer to the Candidate Track
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| 40 | double Z; // Z[i] for DA clustering
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| 41 | double pi; // track weight
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| 42 | double pt;
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| 43 | double eta;
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| 44 | double phi;
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| 45 | };
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| 46 |
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| 47 |
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| 48 | struct vertex_t
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| 49 | {
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| 50 | double z;
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| 51 | double t;
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| 52 | double pk; // vertex weight for "constrained" clustering
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| 53 | // --- temporary numbers, used during update
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| 54 | double ei;
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| 55 | double sw;
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| 56 | double swz;
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| 57 | double swt;
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| 58 | double se;
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| 59 | // ---for Tc
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| 60 | double swE;
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| 61 | double Tc;
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| 62 | };
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| 63 |
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| 64 | void clusterize(const TObjArray & tracks, TObjArray & clusters);
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| 65 |
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| 66 | std::vector< Candidate* > vertices();
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| 67 |
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| 68 | std::vector<track_t> fill() const;
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| 69 |
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| 70 | bool split(double beta,
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| 71 | std::vector<track_t> & tks,
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| 72 | std::vector<vertex_t> & y) const;
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| 73 |
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| 74 | double update(double beta,
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| 75 | std::vector<track_t> & tks,
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| 76 | std::vector<vertex_t> & y) const;
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| 77 |
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| 78 | double update(double beta,
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| 79 | std::vector<track_t> & tks,
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| 80 | std::vector<vertex_t> & y,
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| 81 | double &)const;
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| 82 |
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| 83 | void dump(const double beta, const std::vector<vertex_t> & y, const std::vector<track_t> & tks) const;
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| 84 | bool merge(std::vector<vertex_t> &) const;
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| 85 | bool merge(std::vector<vertex_t> &, double &) const;
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| 86 | bool purge(std::vector<vertex_t> &, std::vector<track_t> & , double &, const double) const;
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| 87 |
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| 88 | void splitAll(std::vector<vertex_t> &y) const;
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| 89 |
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| 90 | double beta0(const double betamax,
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| 91 | std::vector<track_t> &tks,
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| 92 | std::vector<vertex_t> &y)const;
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| 93 |
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| 94 | double Eik(const track_t &t, const vertex_t &k)const;
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| 95 |
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| 96 | private:
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| 97 |
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| 98 | Bool_t fVerbose;
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| 99 | Double_t fMinPT;
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| 100 |
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| 101 | Float_t fVertexSpaceSize;
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| 102 | Float_t fVertexTimeSize;
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| 103 | Bool_t fUseTc;
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| 104 | Float_t fBetaMax;
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| 105 | Float_t fBetaStop;
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| 106 | Double_t fCoolingFactor;
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| 107 | Int_t fMaxIterations;
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| 108 | Double_t fDzCutOff;
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| 109 | Double_t fD0CutOff;
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| 110 | Double_t fDtCutOff; // for when the beamspot has time
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| 111 |
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| 112 | TObjArray *fInputArray;
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| 113 | TIterator *fItInputArray;
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| 114 |
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| 115 | TObjArray *fOutputArray;
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| 116 | TObjArray *fVertexOutputArray;
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| 117 |
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| 118 | ClassDef(VertexFinderDA4D, 1)
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| 119 | };
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| 120 |
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| 121 | #endif
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