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f87cfe57 | 1 | #ifndef ALIDIMUCOMBINATOR_H |
2 | #define ALIDIMUCOMBINATOR_H | |
3da30618 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
675e9664 | 7 | |
8 | ||
9 | // Class for dimuon analysis and fast dimuon simulation. | |
10 | // It uses the AliRun particle tree. | |
11 | // Comments and suggestions to andreas.morsch@cern.ch | |
12 | ||
13 | ||
f87cfe57 | 14 | #include <TObject.h> |
3da30618 | 15 | |
f87cfe57 | 16 | class TClonesArray; |
17 | class TParticle; | |
fe4da5cc | 18 | |
19 | ||
dafbc1c5 | 20 | class AliDimuCombinator: |
fe4da5cc | 21 | public TObject |
22 | { | |
23 | public: | |
3b467544 | 24 | AliDimuCombinator(); |
dc1d768c | 25 | void Copy(TObject &combi) const; |
fe4da5cc | 26 | // |
7d566a7d | 27 | // Iterators |
3b467544 | 28 | // Access to particle stack |
8caed1f4 | 29 | TParticle* Particle(Int_t i) const; |
7d566a7d | 30 | // Single muons |
1578254f | 31 | TParticle* FirstMuon(); |
32 | TParticle* NextMuon(); | |
7d566a7d | 33 | // Single muons selected |
1578254f | 34 | TParticle* FirstMuonSelected(); |
35 | TParticle* NextMuonSelected(); | |
7d566a7d | 36 | // Dimuons |
1578254f | 37 | void FirstMuonPair(TParticle* & muon1, TParticle* & muon2); |
38 | void NextMuonPair(TParticle* & muon1, TParticle* & muon2); | |
7d566a7d | 39 | // Dimuons selected |
1578254f | 40 | void FirstMuonPairSelected(TParticle* & muon1, TParticle* & muon2); |
41 | void NextMuonPairSelected(TParticle* & muon1, TParticle* & muon2); | |
7d566a7d | 42 | // Loop over all prticles |
fe4da5cc | 43 | void ResetRange(); |
7d566a7d | 44 | // Set two ranges for dimuon loop |
fe4da5cc | 45 | void SetFirstRange (Int_t from, Int_t to); |
46 | void SetSecondRange(Int_t from, Int_t to); | |
47 | // Cuts | |
7d566a7d | 48 | void SetPtMin(Float_t ptmin) {fPtMin=ptmin;} |
f87cfe57 | 49 | void SetEtaCut(Float_t etamin, Float_t etamax) |
50 | {fEtaMin=etamin; fEtaMax=etamax;} | |
4a33c50d | 51 | Bool_t Selected(const TParticle* part) const; |
52 | Bool_t Selected(const TParticle* part1, const TParticle* part2) const; | |
fe4da5cc | 53 | // Kinematics |
4a33c50d | 54 | Float_t Mass(const TParticle* part1, const TParticle* part) const; |
55 | Float_t PT(const TParticle* part1, const TParticle* part) const; | |
56 | Float_t Pz(const TParticle* part1, const TParticle* part) const; | |
57 | Float_t Y(const TParticle* part1, const TParticle* part) const; | |
fe4da5cc | 58 | // Response |
8caed1f4 | 59 | void SmearGauss(Float_t width, Float_t & value) const; |
fe4da5cc | 60 | // Weight |
4a33c50d | 61 | Bool_t Correlated(const TParticle* part1, const TParticle* part2) const; |
d430df3f | 62 | void SetRate(Float_t rate) {fRate1=rate;} |
63 | void SetRate(Float_t rate1, Float_t rate2 ) {fRate1=rate1; fRate2=rate2;} | |
4a33c50d | 64 | Float_t Weight(const TParticle* part) const; |
65 | Float_t Weight(const TParticle* part1, const TParticle* part) const; | |
66 | Float_t DecayProbability(const TParticle* part) const; | |
7d566a7d | 67 | |
fe4da5cc | 68 | private: |
69 | void FirstPartner(); | |
70 | void NextPartner(); | |
71 | void FirstPartnerSelected(); | |
72 | void NextPartnerSelected(); | |
4a33c50d | 73 | Int_t Origin(const TParticle* part) const; |
74 | TParticle* Parent(const TParticle* part) const; | |
8caed1f4 | 75 | TParticle* Partner() const; |
4a33c50d | 76 | Int_t Type(const TParticle *part) const; |
675e9664 | 77 | AliDimuCombinator(const AliDimuCombinator &combinator); |
78 | AliDimuCombinator & operator=(const AliDimuCombinator & rhs); | |
79 | ||
d430df3f | 80 | private: |
f87cfe57 | 81 | Int_t fNParticle; // Number of particles |
d430df3f | 82 | Int_t fImuon1; // Index of first muon |
83 | Int_t fImuon2; // Index of second muon | |
84 | Int_t fImin1; // Lowest index for first muon | |
85 | Int_t fImin2; // Lowest index for second muon | |
86 | Int_t fImax1; // Highest index for first muon | |
87 | Int_t fImax2; // Highest index for second muon | |
f87cfe57 | 88 | Float_t fRate1; // weight factor |
89 | Float_t fRate2; // weight factor | |
d430df3f | 90 | TParticle *fMuon1; // First muon |
91 | TParticle *fMuon2; // Second muon | |
f87cfe57 | 92 | Float_t fPtMin; // pT-cut |
93 | Float_t fEtaMin; // Minimum pseudorapidity cut | |
94 | Float_t fEtaMax; // Maximum pseudorapidity cut | |
95 | ||
96 | ClassDef(AliDimuCombinator,1) // Tools for dimuon combinatoric studies | |
fe4da5cc | 97 | }; |
98 | #endif | |
99 | ||
100 | ||
101 | ||
102 | ||
f87cfe57 | 103 | |
d430df3f | 104 | |
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106 |