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1c5acb87 | 1 | #ifndef ALINEUTRALMESONSELECTION_H |
2 | #define ALINEUTRALMESONSELECTION_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | /* $Id: AliNeutralMesonSelection.h 27413 2008-07-18 13:28:12Z gconesab $ */ | |
6 | ||
7 | //_________________________________________________________________________ | |
8 | // Class that contains methods to select candidate pairs to neutral meson | |
9 | // 2 main selections, invariant mass around pi0 (also any other mass), | |
10 | // apperture angle to distinguish from combinatorial. | |
11 | // There is a 3rd cut based on the gamma correlation on phi or pt. | |
12 | //-- Author: Gustavo Conesa (INFN-LNF) | |
13 | ||
14 | // --- ROOT system --- | |
15 | #include<TObject.h> | |
16 | #include<TArrayD.h> | |
17 | ||
18 | class TLorentzVector ; | |
19 | class TList ; | |
20 | class TH2F ; | |
21 | ||
22 | //--- ANALYSIS system --- | |
1c5acb87 | 23 | |
24 | class AliNeutralMesonSelection : public TObject { | |
477d6cee | 25 | |
26 | public: | |
477d6cee | 27 | AliNeutralMesonSelection() ; // default ctor |
78219bac | 28 | virtual ~AliNeutralMesonSelection() ; //virtual dtor |
29 | private: | |
477d6cee | 30 | AliNeutralMesonSelection(const AliNeutralMesonSelection & g) ; // cpy ctor |
31 | AliNeutralMesonSelection & operator = (const AliNeutralMesonSelection & g) ;//cpy assignment | |
477d6cee | 32 | |
78219bac | 33 | public: |
34 | ||
477d6cee | 35 | TList * GetCreateOutputObjects(); |
36 | ||
37 | Double_t GetAngleMaxParam(Int_t i) const {return fAngleMaxParam.At(i) ; } | |
b6991fc4 | 38 | void SetAngleMaxParam(Int_t i, Double_t par){fAngleMaxParam.AddAt(par,i) ; } |
477d6cee | 39 | |
40 | Double_t GetInvMassMaxCut() const {return fInvMassMaxCut ; } | |
41 | Double_t GetInvMassMinCut() const {return fInvMassMinCut ; } | |
b6991fc4 | 42 | void SetInvMassCutRange(Double_t invmassmin, Double_t invmassmax) |
477d6cee | 43 | {fInvMassMaxCut =invmassmax; fInvMassMinCut =invmassmin;} |
44 | ||
45 | Double_t GetMass() const {return fM ; } | |
46 | void SetMass(Double_t m) { fM =m ; } | |
47 | ||
48 | Bool_t AreNeutralMesonSelectionHistosKept() const { return fKeepNeutralMesonHistos ; } | |
b6991fc4 | 49 | void KeepNeutralMesonSelectionHistos(Bool_t keep) { fKeepNeutralMesonHistos = keep ; } |
477d6cee | 50 | |
51 | void InitParameters(); | |
52 | Bool_t IsAngleInWindow(const Float_t angle, const Float_t e) const ; | |
53 | void Print(const Option_t * opt) const; | |
54 | ||
55 | Bool_t SelectPair(TLorentzVector particlei, TLorentzVector particlej) ; | |
b6991fc4 | 56 | |
57 | void SwitchOnAngleSelection() {fUseAngleCut = kTRUE ; } | |
58 | void SwitchOffAngleSelection() {fUseAngleCut = kFALSE ; } | |
59 | ||
477d6cee | 60 | //Histogrammes setters and getters |
61 | ||
62 | virtual void SetHistoERangeAndNBins(Float_t min, Float_t max, Int_t n) { | |
63 | fHistoNEBins = n ; | |
64 | fHistoEMax = max ; | |
65 | fHistoEMin = min ; | |
66 | } | |
67 | ||
68 | Int_t GetHistoNEBins() const { return fHistoNEBins ; } | |
69 | Float_t GetHistoEMin() const { return fHistoEMin ; } | |
70 | Float_t GetHistoEMax() const { return fHistoEMax ; } | |
71 | ||
72 | virtual void SetHistoPtRangeAndNBins(Float_t min, Float_t max, Int_t n) { | |
73 | fHistoNPtBins = n ; | |
74 | fHistoPtMax = max ; | |
75 | fHistoPtMin = min ; | |
76 | } | |
77 | ||
78 | Int_t GetHistoNPtBins() const { return fHistoNPtBins ; } | |
79 | Float_t GetHistoPtMin() const { return fHistoPtMin ; } | |
80 | Float_t GetHistoPtMax() const { return fHistoPtMax ; } | |
81 | ||
82 | virtual void SetHistoAngleRangeAndNBins(Float_t min, Float_t max, Int_t n) { | |
83 | fHistoNAngleBins = n ; | |
84 | fHistoAngleMax = max ; | |
85 | fHistoAngleMin = min ; | |
86 | } | |
87 | ||
88 | Int_t GetHistoNAngleBins() const { return fHistoNAngleBins ; } | |
89 | Float_t GetHistoAngleMin() const { return fHistoAngleMin ; } | |
90 | Float_t GetHistoAngleMax() const { return fHistoAngleMax ; } | |
91 | ||
92 | virtual void SetHistoIMRangeAndNBins(Float_t min, Float_t max, Int_t n) { | |
93 | fHistoNIMBins = n ; | |
94 | fHistoIMMax = max ; | |
95 | fHistoIMMin = min ; | |
96 | } | |
97 | ||
98 | Int_t GetHistoNIMBins() const { return fHistoNIMBins ; } | |
99 | Float_t GetHistoIMMin() const { return fHistoIMMin ; } | |
100 | Float_t GetHistoIMMax() const { return fHistoIMMax ; } | |
101 | ||
102 | ||
103 | private: | |
b6991fc4 | 104 | Double_t fM ; // Mass of the neutral meson |
105 | Double_t fInvMassMaxCut ; // Invariant Mass cut maximum | |
106 | Double_t fInvMassMinCut ; // Invariant Masscut minimun | |
107 | TArrayD fAngleMaxParam ; // Max opening angle selection parameters | |
108 | Bool_t fUseAngleCut ; // Select pairs depending on their opening angle | |
109 | Bool_t fKeepNeutralMesonHistos ; // Keep neutral meson selection histograms | |
477d6cee | 110 | |
111 | //Histograms | |
fad7739b | 112 | TH2F * fhAnglePairNoCut ; //! Aperture angle of decay photons, no cuts |
113 | TH2F * fhAnglePairOpeningAngleCut ; //! Aperture angle of decay photons, cut on opening angle | |
114 | TH2F * fhAnglePairAllCut ; //! Aperture angle of decay photons, all cuts | |
115 | TH2F * fhInvMassPairNoCut ; //! Invariant mass of decay photons, no cuts | |
116 | TH2F * fhInvMassPairOpeningAngleCut ; //! Invariant mass of decay photons, cut on opening angle | |
117 | TH2F * fhInvMassPairAllCut ; //! Invariant mass of decay photons, all cuts | |
477d6cee | 118 | |
119 | //Histograms binning and range | |
fad7739b | 120 | Int_t fHistoNEBins ; // Number of bins in pi0 E axis |
121 | Float_t fHistoEMax ; // Maximum value of pi0 E histogram range | |
122 | Float_t fHistoEMin ; // Minimum value of pi0 E histogram range | |
123 | Int_t fHistoNPtBins ; // Number of bins in Pt trigger axis | |
124 | Float_t fHistoPtMax ; // Maximum value of Pt trigger histogram range | |
125 | Float_t fHistoPtMin ; // Minimum value of Pt trigger histogram range | |
126 | Int_t fHistoNAngleBins ; // Number of bins in angle axis | |
127 | Float_t fHistoAngleMax ; // Maximum value of angle histogram range | |
128 | Float_t fHistoAngleMin ; // Minimum value of angle histogram range | |
129 | Int_t fHistoNIMBins ; // Number of bins in Invariant Mass axis | |
130 | Float_t fHistoIMMax ; // Maximum value of Invariant Mass histogram range | |
131 | Float_t fHistoIMMin ; // Minimum value of Invariant Mass histogram range | |
477d6cee | 132 | |
b6991fc4 | 133 | ClassDef(AliNeutralMesonSelection,3) |
1c5acb87 | 134 | |
477d6cee | 135 | } ; |
1c5acb87 | 136 | |
137 | ||
138 | #endif //ALINEUTRALMESONSELECTION_H | |
139 | ||
140 | ||
141 |