1 #ifndef ALIDIELECTRON_H
2 #define ALIDIELECTRON_H
3 /* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 //#####################################################
8 //# Class AliDielectron #
9 //# Main Class for e+e- analysis #
11 //# by WooJin J. Park, GSI / W.J.Park@gsi.de #
12 //# Ionut C. Arsene, GSI / I.C.Arsene@gsi.de #
13 //# Magnus Mager, CERN / Magnus.Mager@cern.ch #
14 //# Jens Wiechula, Uni HD / Jens.Wiechula@cern.ch #
16 //#####################################################
20 #include <TObjArray.h>
22 #include <AliAnalysisFilter.h>
23 #include <AliKFParticle.h>
25 #include "AliDielectronHistos.h"
29 class AliDielectronCF;
30 class AliDielectronDebugTree;
31 class AliDielectronTrackRotator;
32 class AliDielectronPair;
34 //________________________________________________________________
35 class AliDielectron : public TNamed {
38 enum EPairType { kEv1PP=0, kEv1PM, kEv1MM,
39 kEv1PEv2P, kEv1MEv2P, kEv2PP,
40 kEv1PEv2M, kEv1MEv2M, kEv2PM,
42 enum ELegType { kEv1P, kEv1M, kEv2P, kEv2M };
45 AliDielectron(const char* name, const char* title);
46 virtual ~AliDielectron();
50 void Process(AliVEvent *ev1, AliVEvent *ev2=0);
52 const AliAnalysisFilter& GetEventFilter() const { return fEventFilter; }
53 const AliAnalysisFilter& GetTrackFilter() const { return fTrackFilter; }
54 const AliAnalysisFilter& GetPairFilter() const { return fPairFilter; }
56 AliAnalysisFilter& GetEventFilter() { return fEventFilter; }
57 AliAnalysisFilter& GetTrackFilter() { return fTrackFilter; }
58 AliAnalysisFilter& GetPairFilter() { return fPairFilter; }
59 AliAnalysisFilter& GetPairPreFilter() { return fPairPreFilter; }
60 AliAnalysisFilter& GetPairPreFilterLegs() { return fPairPreFilterLegs; }
62 void SetMotherPdg( Int_t pdgMother ) { fPdgMother=pdgMother; }
63 void SetLegPdg(Int_t pdgLeg1, Int_t pdgLeg2) { fPdgLeg1=pdgLeg1; fPdgLeg2=pdgLeg2; }
64 Int_t GetMotherPdg() const { return fPdgMother; }
65 Int_t GetLeg1Pdg() const { return fPdgLeg1; }
66 Int_t GetLeg2Pdg() const { return fPdgLeg2; }
68 void SetNoPairing(Bool_t noPairing=kTRUE) { fNoPairing=noPairing; }
69 const TObjArray* GetTrackArray(Int_t i) const {return (i>=0&&i<4)?&fTracks[i]:0;}
70 const TObjArray* GetPairArray(Int_t i) const {return (i>=0&&i<10)?
71 static_cast<TObjArray*>(fPairCandidates->UncheckedAt(i)):0;}
73 TObjArray** GetPairArraysPointer() { return &fPairCandidates; }
75 void SetHistogramManager(AliDielectronHistos * const histos) { fHistos=histos; }
76 const THashList * GetHistogramList() const { return fHistos?fHistos->GetHistogramList():0x0; }
78 Bool_t HasCandidates() const { return GetPairArray(1)?GetPairArray(1)->GetEntriesFast()>0:0; }
79 Bool_t HasCandidatesLikeSign() const {
80 return (GetPairArray(0)&&GetPairArray(2)) ? (GetPairArray(0)->GetEntriesFast()>0 || GetPairArray(2)->GetEntriesFast()>0) : 0;
83 void SetCFManagerPair(AliDielectronCF * const cf) { fCfManagerPair=cf; }
84 AliDielectronCF* GetCFManagerPair() const { return fCfManagerPair; }
86 void SetPreFilterUnlikeOnly(Bool_t setValue=kTRUE){fPreFilterUnlikeOnly=setValue;};
88 void SetTrackRotator(AliDielectronTrackRotator * const rot) { fTrackRotator=rot; }
89 AliDielectronTrackRotator* GetTrackRotator() const { return fTrackRotator; }
91 void SetHasMC(Bool_t hasMC) { fHasMC = hasMC; }
92 Bool_t GetHasMC() const { return fHasMC; }
94 void SetDebugTree(AliDielectronDebugTree * const tree) { fDebugTree=tree; }
96 static const char* TrackClassName(Int_t i) { return (i>=0&&i<4)?fgkTrackClassNames[i]:""; }
97 static const char* PairClassName(Int_t i) { return (i>=0&&i<11)?fgkPairClassNames[i]:""; }
104 AliAnalysisFilter fEventFilter; // Event cuts
105 AliAnalysisFilter fTrackFilter; // leg cuts
106 AliAnalysisFilter fPairPreFilter; // pair prefilter cuts
107 AliAnalysisFilter fPairPreFilterLegs; // Leg filter after the pair prefilter cuts
108 AliAnalysisFilter fPairFilter; // pair cuts
110 Int_t fPdgMother; // pdg code of mother tracks
111 Int_t fPdgLeg1; // pdg code leg1
112 Int_t fPdgLeg2; // pdg code leg2
114 Bool_t fNoPairing; // if to skip pairing, can be used for track QA only
116 AliDielectronHistos *fHistos; // Histogram manager
117 // Streaming and merging should be handled
118 // by the analysis framework
120 TObjArray fTracks[4]; //! Selected track candidates
121 // 0: Event1, positive particles
122 // 1: Event1, negative particles
123 // 2: Event2, positive particles
124 // 3: Event2, negative particles
126 TObjArray *fPairCandidates; //! Pair candidate arrays
127 //TODO: better way to store it? TClonesArray?
129 AliDielectronCF *fCfManagerPair;//Correction Framework Manager for the Pair
130 AliDielectronTrackRotator *fTrackRotator; //Track rotator
131 AliDielectronDebugTree *fDebugTree; // Debug tree output
133 Bool_t fPreFilterUnlikeOnly; //Apply PreFilter either in +- or to ++/--/+- individually
134 Bool_t fHasMC; //If we run with MC, at the moment only needed in AOD
136 void FillTrackArrays(AliVEvent * const ev, Int_t eventNr=0);
137 void PairPreFilter(Int_t arr1, Int_t arr2, TObjArray &arrTracks1, TObjArray &arrTracks2);
138 void FillPairArrays(Int_t arr1, Int_t arr2);
139 void FillPairArrayTR();
141 Int_t GetPairIndex(Int_t arr1, Int_t arr2) const {return arr1>=arr2?arr1*(arr1+1)/2+arr2:arr2*(arr2+1)/2+arr1;}
143 void InitPairCandidateArrays();
146 TObjArray* PairArray(Int_t i);
148 static const char* fgkTrackClassNames[4]; //Names for track arrays
149 static const char* fgkPairClassNames[11]; //Names for pair arrays
153 void FillHistograms(const AliVEvent *ev);
154 void FillHistogramsPair(AliDielectronPair *pair,Bool_t fromPreFilter=kFALSE);
155 void FillHistogramsTracks(TObjArray **tracks);
157 void FillDebugTree();
159 AliDielectron(const AliDielectron &c);
160 AliDielectron &operator=(const AliDielectron &c);
162 ClassDef(AliDielectron,4);
165 inline void AliDielectron::InitPairCandidateArrays()
168 // initialise all pair candidate arrays
170 fPairCandidates->SetOwner();
171 for (Int_t i=0;i<10;++i){
172 TObjArray *arr=new TObjArray;
173 fPairCandidates->AddAt(arr,i);
178 inline TObjArray* AliDielectron::PairArray(Int_t i)
181 // for internal use only: unchecked return of track array for fast access
183 return static_cast<TObjArray*>(fPairCandidates->UncheckedAt(i));
186 inline void AliDielectron::ClearArrays()
191 for (Int_t i=0;i<4;++i){
194 for (Int_t i=0;i<10;++i){
195 PairArray(i)->Delete();