1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 // Utility class for V0 PID
17 // Provides smaples of electrons, pions and protons
18 // More information can be found in the implementation file
40 class AliHFEcollection;
42 class AliHFEV0pid : public TNamed{
45 AliHFEV0pid(const char *name);
48 void Process(AliVEvent * const inputEvent);
49 Int_t ProcessV0(TObject *v0);
53 TList *GetListOfQAhistograms();
55 TObjArray *GetListOfElectrons() const { return fElectrons; }
56 TObjArray *GetListOfPionsK0() const { return fPionsK0; }
57 TObjArray *GetListOfPionsL() const { return fPionsL; }
58 TObjArray *GetListOfKaons() const { return fKaons; }
59 TObjArray *GetListOfProtons() const { return fProtons; }
61 Bool_t IsAODanalysis() const { return TestBit(kAODanalysis); }
62 Bool_t IsESDanalysis() const { return !TestBit(kAODanalysis); }
63 void SetAODanalysis(Bool_t isAOD = kTRUE) { SetBit(kAODanalysis, isAOD); };
64 void SetESDanalysis(Bool_t isESD = kTRUE) { SetBit(kAODanalysis, !isESD); };
66 void SetMCEvent(AliMCEvent* const ev) { fMCEvent = ev; };
70 kAODanalysis = BIT(14)
73 Int_t PreselectV0(AliESDv0 * const v0, Int_t idMC);
75 void ArmenterosPlotMC(AliESDv0 * const v0, Int_t idMC);
76 Bool_t IsGammaConv(TObject *v0);
77 Bool_t IsK0s(TObject *v0);
78 Bool_t IsPhi(const TObject *v0) const;
79 Bool_t IsLambda(TObject *v0);
82 Int_t IdentifyV0(TObject *v0, Int_t d[2]);
84 void BenchmarkV0finder();
87 class AliHFEV0pidTrackIndex{
89 AliHFEV0pidTrackIndex();
90 ~AliHFEV0pidTrackIndex();
91 void Init(Int_t capacity);
92 void Add(Int_t index, Int_t species);
93 Bool_t Find(Int_t index) const;
94 Bool_t Find(Int_t index, Int_t species) const;
95 Int_t GetNumberOfElectrons() const { return fNElectrons; };
96 Int_t GetNumberOfPionsK0() const { return fNPionsK0; };
97 Int_t GetNumberOfPionsL() const { return fNPionsL; };
98 Int_t GetNumberOfKaons() const { return fNKaons; };
99 Int_t GetNumberOfProtons() const { return fNProtons; };
103 AliHFEV0pidTrackIndex(const AliHFEV0pidTrackIndex &ref);
104 AliHFEV0pidTrackIndex &operator=(const AliHFEV0pidTrackIndex &ref);
105 Int_t fNElectrons; // Number of identified electrons
106 Int_t fNPionsK0; // Number of identified pions from K0s
107 Int_t fNPionsL; // Lumber of identified pions from Lambda
108 Int_t fNKaons; // Number of identified kaons
109 Int_t fNProtons; // Number of identified protons
110 Int_t *fIndexElectron; // Indices of identified electrons
111 Int_t *fIndexPionK0; // Indices of identified pions from K0s
112 Int_t *fIndexPionL; // Indices of identified pions from Lambda
113 Int_t *fIndexKaon; // Indices of identified kaons
114 Int_t *fIndexProton; // Indices of identified protons
116 AliHFEV0pid(const AliHFEV0pid &ref);
117 AliHFEV0pid&operator=(const AliHFEV0pid &ref);
119 AliVEvent *fInputEvent; // Input Event
120 Int_t fNtracks; // number of tracks in current event
121 AliMCEvent *fMCEvent; // MC evnet
122 Bool_t fMCon; // availability of MC information
123 AliKFVertex *fPrimaryVertex; // Primary Vertex
124 TObjArray *fElectrons; // List of Electron tracks coming from Conversions
125 TObjArray *fPionsK0; // List of Pion tracks coming from K0
126 TObjArray *fPionsL; // List of Pion tracks coming from L
127 TObjArray *fKaons; // List of Kaon tracks from Phi decay
128 TObjArray *fProtons; // List of Proton Tracks coming from Lambdas
130 TObjArray *fGammas; // for MC purposes - list of found gammas
131 TObjArray *fK0s; // for MC purposes - list of found K0s
132 TObjArray *fLambdas; // for MC purposes - list of found lambdas
133 TObjArray *fAntiLambdas; // for MC purposes - list of found anti lambdas
135 AliHFEV0pidTrackIndex *fIndices; // Container for Track indices
136 AliHFEcollection *fQA; // Collection of QA histograms
137 AliHFEV0cuts *fV0cuts; // separate class for studying and applying the V0 cuts
138 TList *fOutput; // collection list
140 UInt_t fDestBits; // logical bits for destructor
142 ClassDef(AliHFEV0pid, 1) // V0 PID Class