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[u/mrichter/AliRoot.git] / ANALYSIS / AliPhysicsSelection.h
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61899827 1/* $Id: AliPhysicsSelection.h 35782 2009-10-22 11:54:31Z jgrosseo $ */
2
3#ifndef ALIPHYSICSSELECTION_H
4#define ALIPHYSICSSELECTION_H
5
6/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
7 * See cxx source for full Copyright notice */
8
9//-------------------------------------------------------------------------
10// Implementation of Class AliPhysicsSelection
11//
12// This class selects collision candidates from data runs, applying selection cuts on triggers
13// and background rejection based on the content of the ESD
14//
15// Origin: Jan Fiete Grosse-Oetringhaus, CERN
16//-------------------------------------------------------------------------
17
296dd262 18#include <AliAnalysisCuts.h>
61899827 19#include <TList.h>
20
21class AliESDEvent;
17ba346c 22class TH2F;
61899827 23class TCollection;
24class AliTriggerAnalysis;
25
296dd262 26class AliPhysicsSelection : public AliAnalysisCuts
61899827 27{
28 public:
29 AliPhysicsSelection();
30 virtual ~AliPhysicsSelection();
31
296dd262 32 // AliAnalysisCuts interface
9eeae5d5 33 virtual Bool_t IsSelected(TObject* obj) { return IsCollisionCandidate((const AliESDEvent*) obj); }
34 virtual Bool_t IsSelected(TList*) { return kFALSE; }
296dd262 35
61899827 36 Bool_t IsCollisionCandidate(const AliESDEvent* aEsd);
37 Bool_t Initialize(UInt_t runNumber);
a2ce3799 38 void SetAnalyzeMC(Bool_t flag = kTRUE) { fMC = flag; }
61899827 39
296dd262 40 void AddBackgroundIdentification(AliAnalysisCuts* background) { fBackgroundIdentification = background; }
41
61899827 42 virtual void Print(Option_t* option = "") const;
43 virtual Long64_t Merge(TCollection* list);
44 void SaveHistograms(const char* folder = 0) const;
45
296dd262 46 TList* GetCollisionTriggerClasses() { return &fCollTrigClasses; }
47 TList* GetBGTriggerClasses() { return &fBGTrigClasses; }
15f7c3c9 48 AliTriggerAnalysis* GetTriggerAnalysis() { return (fTriggerAnalysis.GetEntries() > 0) ? (AliTriggerAnalysis*) fTriggerAnalysis.At(0) : 0; }
61899827 49
17ba346c 50 const TH2F* GetStatisticsHistogram() const { return fHistStatistics; }
51 const TH2F* GetBunchCrossingHistogram() const { return fHistBunchCrossing; }
52
61899827 53 protected:
296dd262 54 Bool_t CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const;
a2ce3799 55 Int_t GetTriggerScheme(UInt_t runNumber);
296dd262 56
57 Int_t fCurrentRun; // run number for which the object is initialized
a2ce3799 58 Bool_t fMC; // flag if MC is analyzed
296dd262 59 TList fCollTrigClasses; // trigger class identifying collision candidates
60 TList fBGTrigClasses; // trigger classes identifying background events
61
62 TList fTriggerAnalysis; // list of offline trigger objects (several are needed to keep the control histograms separate per trigger class)
61899827 63
296dd262 64 AliAnalysisCuts* fBackgroundIdentification; // class that performs additional background identification
61899827 65
17ba346c 66 TH2F* fHistStatistics; // how many events are cut away why
67 TH2F* fHistBunchCrossing; // histograms of accepted bunch crossing numbers
61899827 68
a2ce3799 69 ClassDef(AliPhysicsSelection, 2)
61899827 70
71 private:
72 AliPhysicsSelection(const AliPhysicsSelection&);
73 AliPhysicsSelection& operator=(const AliPhysicsSelection&);
74};
75
76#endif