1 /* $Id: AliPhysicsSelection.h 35782 2009-10-22 11:54:31Z jgrosseo $ */
3 #ifndef ALIPHYSICSSELECTION_H
4 #define ALIPHYSICSSELECTION_H
6 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
7 * See cxx source for full Copyright notice */
9 //-------------------------------------------------------------------------
10 // Implementation of Class AliPhysicsSelection
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
15 // Origin: Jan Fiete Grosse-Oetringhaus, CERN
16 //-------------------------------------------------------------------------
18 #include <AliAnalysisCuts.h>
20 #include "TObjString.h"
25 class AliTriggerAnalysis;
27 class AliPhysicsSelection : public AliAnalysisCuts
30 AliPhysicsSelection();
31 virtual ~AliPhysicsSelection();
33 // AliAnalysisCuts interface
34 virtual Bool_t IsSelected(TObject* obj) { return IsCollisionCandidate((const AliESDEvent*) obj); }
35 virtual Bool_t IsSelected(TList*) { return kFALSE; }
37 Bool_t IsCollisionCandidate(const AliESDEvent* aEsd);
38 Bool_t Initialize(UInt_t runNumber);
40 void SetAnalyzeMC(Bool_t flag = kTRUE) { fMC = flag; }
41 void SetSkipTriggerClassSelection(Bool_t flag = kTRUE) { fSkipTriggerClassSelection = flag; }
43 void AddBackgroundIdentification(AliAnalysisCuts* background) { fBackgroundIdentification = background; }
45 virtual void Print(Option_t* option = "") const;
46 virtual Long64_t Merge(TCollection* list);
47 void SaveHistograms(const char* folder = 0) const;
49 const TList* GetCollisionTriggerClasses() const { return &fCollTrigClasses; }
50 const TList* GetBGTriggerClasses() const { return &fBGTrigClasses; }
51 void AddCollisionTriggerClass(const char* className){ fCollTrigClasses.Add(new TObjString(className)); fUsingCustomClasses = kTRUE; }
52 void AddBGTriggerClass(const char* className) { fBGTrigClasses.Add(new TObjString(className)); fUsingCustomClasses = kTRUE; }
54 AliTriggerAnalysis* GetTriggerAnalysis() { return (fTriggerAnalysis.GetEntries() > 0) ? (AliTriggerAnalysis*) fTriggerAnalysis.At(0) : 0; }
56 const TH2F* GetStatisticsHistogram() const { return fHistStatistics; }
57 const TH2F* GetBunchCrossingHistogram() const { return fHistBunchCrossing; }
60 Bool_t CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const;
61 Int_t GetTriggerScheme(UInt_t runNumber);
63 Int_t fCurrentRun; // run number for which the object is initialized
64 Bool_t fMC; // flag if MC is analyzed
65 TList fCollTrigClasses; // trigger class identifying collision candidates
66 TList fBGTrigClasses; // trigger classes identifying background events
68 TList fTriggerAnalysis; // list of offline trigger objects (several are needed to keep the control histograms separate per trigger class)
70 AliAnalysisCuts* fBackgroundIdentification; // class that performs additional background identification
72 TH2F* fHistStatistics; // how many events are cut away why
73 TH2F* fHistBunchCrossing; // histograms of accepted bunch crossing numbers
75 Bool_t fSkipTriggerClassSelection; // flag that determines if the trigger classs selection is skipped
76 Bool_t fUsingCustomClasses; // flag that is set if costum trigger classes are defined
78 ClassDef(AliPhysicsSelection, 2)
81 AliPhysicsSelection(const AliPhysicsSelection&);
82 AliPhysicsSelection& operator=(const AliPhysicsSelection&);