1 #ifndef ALIRSNMINIVALUE_H
2 #define ALIRSNMINIVALUE_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
7 ////////////////////////////////////////////////////////////////////////////////
9 // Values which depend on 4-momentum of the pair.
11 ////////////////////////////////////////////////////////////////////////////////
14 class AliRsnMiniEvent;
16 class AliRsnMiniValue : public TNamed {
20 kVz, // event Z position of primary vertex
21 kMult, // event multiplicity or centrality (depends on task settings)
22 kPlaneAngle, // event reaction plane angle
23 kLeadingPt, // event leading particle momentum
24 kEventCuts, // -- limit of event cuts ----------------------------------------------------
25 kPt, // pair transverse momentum
26 kPz, // pair longitudinal momentum
27 kInvMass, // pair invariant mass (with reconstructed momenta)
28 kInvMassRes, // pair invariant mass resolution
29 kEta, // pair pseudo-rapidity
30 kMt, // pair transverse mass (need a reference mass)
31 kY, // pair rapidity (need a reference mass)
32 kPtRatio, // ratio |pt1 - pt2|/(pt1 + pt2) of daughter transverse momenta
33 kDipAngle, // inverse cosine of the angle between daughter vector momenta
34 kCosThetaStar, // polarization angle
35 kAngleLeading, // angle to leading particle
36 kTypes // -- general limit ----------------------------------------------------------
39 AliRsnMiniValue(EType type = kTypes, Bool_t useMC = kFALSE);
40 AliRsnMiniValue(const AliRsnMiniValue& copy);
41 AliRsnMiniValue& operator=(const AliRsnMiniValue& copy);
42 virtual ~AliRsnMiniValue() { }
44 void SetType(EType type) {fType = type;}
45 EType GetType() const {return fType;}
46 const char* GetTypeName() const {return TypeName(fType);}
47 Bool_t IsEventValue() const {return (fType < kEventCuts);}
49 Float_t Eval(AliRsnMiniPair *pair, AliRsnMiniEvent *event = 0x0);
51 static const char* TypeName(EType type);
52 static const char* ValueName(EType type, Bool_t useMC);
56 EType fType; // type from enumeration
57 Bool_t fUseMCInfo; // switch to use rec/sim momentum
59 ClassDef(AliRsnMiniValue, 1) // AliRsnMiniValue class
62 inline const char* AliRsnMiniValue::ValueName(EType type, Bool_t useMC)
65 // Define a criterion to name these object.
66 // They are not managed by the user, since each object is a singleton
70 return Form("MC_%s", TypeName(type));
72 return TypeName(type);