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1 | /* $Id$ */ | |
2 | ||
3 | #ifndef ALIPWG0HELPER_H | |
4 | #define ALIPWG0HELPER_H | |
5 | ||
6 | #include <TObject.h> | |
7 | #include <AliTriggerAnalysis.h> | |
8 | ||
9 | // static helper functions | |
10 | ||
11 | class AliESDEvent; | |
12 | class AliESDVertex; | |
13 | class TParticle; | |
14 | class TH1; | |
15 | class TH2; | |
16 | class TH3; | |
17 | class AliHeader; | |
18 | class AliGenEventHeader; | |
19 | class AliStack; | |
20 | class TTree; | |
21 | class AliOfflineTrigger; | |
22 | class AliMultiplicity; | |
23 | ||
24 | class AliPWG0Helper : public TObject | |
25 | { | |
26 | public: | |
27 | // kTPCSPD: tracks + tracklets not using any cluster associated to tracks | |
28 | enum AnalysisMode { kInvalid = -1, kSPD = 0x1, kTPC = 0x2, kTPCITS = 0x4, kFieldOn = 0x8, kSPDOnlyL0 = 0x10, kTPCSPD = 0x20}; | |
29 | // in case we want to use bitmaps... | |
30 | enum MCProcessType { kInvalidProcess = -1, kND = 0x1, kDD = 0x2, kSD = 0x4, kOnePart = 0x8 }; | |
31 | enum DiffTreatment { kMCFlags = 0, kUA5Cuts = 1, kE710Cuts, kALICEHadronLevel }; | |
32 | ||
33 | static const AliESDVertex* GetVertex(const AliESDEvent* aEsd, AnalysisMode analysisMethod, Bool_t debug = kFALSE); | |
34 | static Bool_t TestVertex(const AliESDVertex* vertex, AnalysisMode analysisMode, Bool_t debug = kFALSE); | |
35 | ||
36 | static Bool_t IsPrimaryCharged(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug = kFALSE); | |
37 | ||
38 | static MCProcessType GetEventProcessType(AliESDEvent* esd, AliHeader* header, AliStack* stack, DiffTreatment diffTreatment); | |
39 | static MCProcessType GetEventProcessType(AliHeader* aHeader, Bool_t adebug = kFALSE); | |
40 | static MCProcessType GetPythiaEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug = kFALSE); | |
41 | static MCProcessType GetDPMjetEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug = kFALSE); | |
42 | static Int_t GetLastProcessType() { return fgLastProcessType; } | |
43 | ||
44 | static TParticle* FindPrimaryMother(AliStack* stack, Int_t label); | |
45 | static Int_t FindPrimaryMotherLabel(AliStack* stack, Int_t label); | |
46 | ||
47 | static void CreateProjections(TH3* hist, Bool_t save = kFALSE); | |
48 | static void CreateDividedProjections(TH3* hist, TH3* hist2, const char* axis = 0, Bool_t putErrors = kFALSE, Bool_t save = kFALSE); | |
49 | static const char* GetAxisTitle(TH3* hist, const char axis); | |
50 | ||
51 | static void NormalizeToBinWidth(TH1* hist); | |
52 | static void NormalizeToBinWidth(TH2* hist); | |
53 | ||
54 | static void PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger, DiffTreatment diffTreatment); | |
55 | ||
56 | static Double_t Rapidity(Double_t pt, Double_t pz, Double_t m); | |
57 | static Bool_t IsHadronLevelSingleDiffractive(AliStack* stack, Float_t cms, Float_t xiMin, Float_t xiMax); | |
58 | ||
59 | protected: | |
60 | static Int_t fgLastProcessType; // stores the raw value of the last process type extracted | |
61 | ||
62 | ClassDef(AliPWG0Helper, 0) | |
63 | ||
64 | private: | |
65 | AliPWG0Helper(const AliPWG0Helper&); | |
66 | AliPWG0Helper& operator=(const AliPWG0Helper&); | |
67 | }; | |
68 | ||
69 | #endif | |
70 |