new AliMC methods SetExternalDecayer(), Decayer() added - not yet implemented
[u/mrichter/AliRoot.git] / EVGEN / AliGenParam.h
CommitLineData
34825e2b 1#ifndef ALIGENPARAM_H
2#define ALIGENPARAM_H
3da30618 3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
fe4da5cc 8#include "AliGenerator.h"
fa480368 9#include "AliDecayer.h"
34825e2b 10#include "GenTypeDefs.h"
5c3fd7ea 11#include <TArrayI.h>
f87cfe57 12
13class AliPythia;
14class TParticle;
b22ee262 15class AliGenLib;
f87cfe57 16class TF1;
17
fe4da5cc 18//-------------------------------------------------------------
fe4da5cc 19class AliGenParam : public AliGenerator
20{
34825e2b 21 public:
22 AliGenParam();
b22ee262 23 AliGenParam(Int_t npart, AliGenLib * Library, Param_t param, char* tname=0);
24 AliGenParam(Int_t npart, Param_t param, char* tname=0);
34825e2b 25 AliGenParam(Int_t npart, Param_t param,
26 Double_t (*PtPara)(Double_t*, Double_t*),
27 Double_t (*YPara )(Double_t*, Double_t*),
f87cfe57 28 Int_t (*IpPara)() );
29 AliGenParam(const AliGenParam &Param);
30
34825e2b 31 virtual ~AliGenParam();
32 virtual void Generate();
33 virtual void Init();
34 // select particle type
35 virtual void SetParam(Param_t param=jpsi_p) {fParam=param;}
36 // force decay type
37 virtual void SetForceDecay(Decay_t decay=dimuon) {fForceDecay=decay;}
38 virtual void SetWeighting(Weighting_t flag=analog) {fAnalog=flag;}
39 virtual void SetCutOnChild(Int_t flag=0) {fCutOnChild=flag;}
40 virtual void SetChildMomentumRange(Float_t pmin=0, Float_t pmax=1.e10)
41 {fChildPMin = pmin; fChildPMax = pmax;}
42 virtual void SetChildPtRange(Float_t ptmin=0, Float_t ptmax=20.)
43 {fChildPtMin = ptmin; fChildPtMax = ptmax;}
44 virtual void SetChildPhiRange(Float_t phimin=-180., Float_t phimax=180)
45 {fChildPhiMin = TMath::Pi()*phimin/180;
46 fChildPhiMax = TMath::Pi()*phimax/180;}
47 virtual void SetChildThetaRange(Float_t thetamin=0, Float_t thetamax=180)
48 {fChildThetaMin = TMath::Pi()*thetamin/180;
49 fChildThetaMax = TMath::Pi()*thetamax/180;}
50 virtual void SetDeltaPt(Float_t delta=0.01) {fDeltaPt=delta;}
51
f87cfe57 52 AliGenParam & operator=(const AliGenParam & rhs);
34825e2b 53 protected:
54 Double_t (*fPtParaFunc)(Double_t*, Double_t*); //! Pointer to Pt parametrisation function
55 Double_t (*fYParaFunc )(Double_t*, Double_t*); //! Pointer to Y parametrisation function
56 Int_t (*fIpParaFunc )(); //! Pointer to particle type parametrisation function
57 TF1* fPtPara; // Transverse momentum parameterisation
58 TF1* fYPara; // Rapidity parameterisation
4d9d5cbd 59 Param_t fParam; // Parameterisation type
60 Float_t fdNdy0; // central multiplicity per event
61 Float_t fYWgt; // Y-weight
62 Float_t fPtWgt; // Pt-weight
63 Weighting_t fAnalog; // Flag for anolog or pt-weighted generation
64 Float_t fBias; // Biasing factor
65 Int_t fTrials; // Number of trials
66 Decay_t fForceDecay; // Decay channel forced
67 Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled
68 Float_t fChildPtMin; // Children minimum pT
69 Float_t fChildPtMax; // Children maximum pT
70 Float_t fChildPMin; // Children minimum p
71 Float_t fChildPMax; // Children maximum p
72 Float_t fChildPhiMin; // Children minimum phi
73 Float_t fChildPhiMax; // Children maximum phi
74 Float_t fChildThetaMin;// Children minimum theta
75 Float_t fChildThetaMax;// Children maximum theta
34825e2b 76 Float_t fDeltaPt; // pT sampling in steps of fDeltaPt
77 TArrayI fChildSelect; // Children to be selected from decay products
fa480368 78 AliDecayer *fDecayer; // Pointer to pythia object for decays
fe4da5cc 79 private:
80 // check if particle is selected as child
81 Bool_t ChildSelected(Int_t ip);
82 // all kinematic selection goes here
1578254f 83 Bool_t KinematicSelection(TParticle *particle);
34825e2b 84
b7601ac4 85 ClassDef(AliGenParam,1) // Generator using parameterised pt- and y-distribution
fe4da5cc 86};
87#endif
88
89
90
91
92
93
94
95
96
97