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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
18#include <AliAnalysisCuts.h>
19#include <TList.h>
20
21class AliESDEvent;
22class TH2F;
23class TCollection;
24class AliTriggerAnalysis;
25
26class AliPhysicsSelection : public AliAnalysisCuts
27{
28 public:
29 AliPhysicsSelection();
30 virtual ~AliPhysicsSelection();
31
32 // AliAnalysisCuts interface
33 virtual Bool_t IsSelected(TObject* obj) { return IsCollisionCandidate((const AliESDEvent*) obj); }
34 virtual Bool_t IsSelected(TList*) { return kFALSE; }
35
36 Bool_t IsCollisionCandidate(const AliESDEvent* aEsd);
37 Bool_t Initialize(UInt_t runNumber);
38 void SetAnalyzeMC(Bool_t flag = kTRUE) { fMC = flag; }
39
40 void AddBackgroundIdentification(AliAnalysisCuts* background) { fBackgroundIdentification = background; }
41
42 virtual void Print(Option_t* option = "") const;
43 virtual Long64_t Merge(TCollection* list);
44 void SaveHistograms(const char* folder = 0) const;
45
46 TList* GetCollisionTriggerClasses() { return &fCollTrigClasses; }
47 TList* GetBGTriggerClasses() { return &fBGTrigClasses; }
48 AliTriggerAnalysis* GetTriggerAnalysis() { return (fTriggerAnalysis.GetEntries() > 0) ? (AliTriggerAnalysis*) fTriggerAnalysis.At(0) : 0; }
49
50 const TH2F* GetStatisticsHistogram() const { return fHistStatistics; }
51 const TH2F* GetBunchCrossingHistogram() const { return fHistBunchCrossing; }
52
53 protected:
54 Bool_t CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const;
55 Int_t GetTriggerScheme(UInt_t runNumber);
56
57 Int_t fCurrentRun; // run number for which the object is initialized
58 Bool_t fMC; // flag if MC is analyzed
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)
63
64 AliAnalysisCuts* fBackgroundIdentification; // class that performs additional background identification
65
66 TH2F* fHistStatistics; // how many events are cut away why
67 TH2F* fHistBunchCrossing; // histograms of accepted bunch crossing numbers
68
69 ClassDef(AliPhysicsSelection, 2)
70
71 private:
72 AliPhysicsSelection(const AliPhysicsSelection&);
73 AliPhysicsSelection& operator=(const AliPhysicsSelection&);
74};
75
76#endif