| 1 | #ifndef KTJET_KTJETTABLE_H
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| 2 | #define KTJET_KTJETTABLE_H
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| 3 |
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| 4 | #include "KtJet/KtLorentzVector.h"
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| 5 | #include "KtJet/KtDistanceInterface.h"
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| 6 | #include "KtJet/KtRecomInterface.h"
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| 7 | #include <vector>
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| 8 | #include <string>
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| 9 |
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| 10 |
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| 11 | namespace KtJet{
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| 12 |
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| 13 | /**
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| 14 | * Class KtJetTable encapsulates the jet four-momenta and Kt's in one object.
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| 15 | * Does merging and deletion of jets and returns jets, Kt's etc.
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| 16 | * Uses a KtDistance object to calculate Kt's.
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| 17 | *
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| 18 | * Usage example:
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| 19 | * CLHEP::HepLorentzVector eScheme(const CLHEP::HepLorentzVector &,
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| 20 | const CLHEP::HepLorentzVector &); // function to merge jets
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| 21 | * std::vector<KtLorentzVector> jets;
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| 22 | * // [Put some particles in "jets".]
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| 23 | * KtDistanceDeltaR ktPP(4); // 4 = pp collision
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| 24 | * KtJetTable jt(jets, ktPP, eScheme);
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| 25 |
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| 26 | @author J.Butterworth J.Couchman B.Cox B.Waugh
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| 27 | */
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| 28 | class KtJetTable {
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| 29 | public:
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| 30 | KtJetTable(const std::vector<KtLorentzVector> &, KtDistance *, KtRecom *recom);
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| 31 | ~KtJetTable();
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| 32 | /* Number of jets */
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| 33 | inline int getNJets() const;
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| 34 | /** Get jet from table */
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| 35 | const KtLorentzVector & getJet(int i) const;
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| 36 | /** Kt for jet pair (i,j) */
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| 37 | KtFloat getD(int i, int j) const;
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| 38 | /** Kt of jet (i) with respect to beam */
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| 39 | KtFloat getD(int i) const;
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| 40 | /** Get indices of jet pair with min Kt */
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| 41 | std::pair<int,int> getMinDPair() const;
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| 42 | /** Get index of jet with min Kt with respect to beam */
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| 43 | int getMinDJet() const;
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| 44 | /** Combine jets (i,j) (E-scheme only so far) */
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| 45 | void mergeJets(int i, int j);
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| 46 | /** Delete jet (i) from table */
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| 47 | void killJet(int i);
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| 48 | private:
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| 49 | /** Initial number of jets/particles */
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| 50 | int m_nRows;
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| 51 | /** Jet 4-momenta */
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| 52 | std::vector<KtLorentzVector> m_jets;
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| 53 | /** Function object to define Kt distance scheme */
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| 54 | KtDistance *m_fKtDist;
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| 55 | /** Recombination scheme */
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| 56 | KtRecom *m_ktRecom;
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| 57 | // CLHEP::HepLorentzVector (*m_frecom)(const CLHEP::HepLorentzVector &, const CLHEP::HepLorentzVector &);
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| 58 | /** Kt with respect to beam */
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| 59 | std::vector<KtFloat> m_ddi;
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| 60 | /** Class to deal with pair Kt's */
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| 61 | class DijTable {
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| 62 | private:
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| 63 | /** No. of initial jets/particles */
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| 64 | int m_nRows;
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| 65 | /** No. of jets after merging etc. */
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| 66 | int m_nJets;
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| 67 | /** Vector of Kt values */
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| 68 | std::vector<KtFloat> m_table;
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| 69 | public:
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| 70 | DijTable(int nParticles=0);
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| 71 | ~DijTable();
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| 72 | /** Set size to hold nParticles particles */
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| 73 | void resize(int nParticles);
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| 74 | /** Return reference to allow Kt value to be set */
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| 75 | KtFloat & operator() (int i, int j);
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| 76 | /** Return Kt by value */
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| 77 | KtFloat operator() (int i, int j) const;
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| 78 | /** Find position of minimum Kt in table */
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| 79 | std::pair<int,int> getMin() const;
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| 80 | /** Decrement number of jets */
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| 81 | void killJet();
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| 82 | /** ??? debug only? Print contents of table */
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| 83 | void print() const;
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| 84 | };
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| 85 | /** 2D table of all pair kt's */
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| 86 | DijTable m_dPairs;
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| 87 | };
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| 88 |
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| 89 | #include "KtJet/KtJetTable.icc"
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| 90 |
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| 91 | }//end of namespace
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| 92 | #endif
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