Derive from AliGenMC.
[u/mrichter/AliRoot.git] / EVGEN / AliGenHijing.h
CommitLineData
110410f9 1#ifndef ALIGENHIJING_H
2#define ALIGENHIJING_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
675e9664 8// Generator using HIJING as an external generator
9// The main HIJING options are accessable for the user through this interface.
10// andreas.morsch@cern.ch
110410f9 11
55d6adcf 12#include "AliGenMC.h"
3b8bd63f 13#include <TString.h>
110410f9 14#include <TArrayI.h>
15
65fb704d 16class THijing;
110410f9 17class TArrayI;
18class TParticle;
b23a502f 19class TClonesArray;
21ce2e6f 20class TGraph;
110410f9 21
55d6adcf 22class AliGenHijing : public AliGenMC
110410f9 23{
24 enum {kNoTrigger, kHardProcesses, kDirectPhotons};
25
26 public:
27 AliGenHijing();
28 AliGenHijing(Int_t npart);
29 AliGenHijing(const AliGenHijing &Hijing);
30 virtual ~AliGenHijing();
31 virtual void Generate();
32 virtual void Init();
33 // set centre of mass energy
34 virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
59d7832e 35 virtual void SetReferenceFrame(TString frame="CMS")
3b8bd63f 36 {fFrame=frame;}
59d7832e 37 virtual void SetProjectile(TString proj="A",
3b8bd63f 38 Int_t a=208, Int_t z=82)
110410f9 39 {fProjectile = proj;
40 fAProjectile = a;
41 fZProjectile = z;}
59d7832e 42 virtual void SetTarget(TString tar="A",
3b8bd63f 43 Int_t a=208, Int_t z=82)
110410f9 44 {fTarget = tar;
45 fATarget = a;
46 fZTarget =z;}
47 virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax =15.)
48 { fMinImpactParam=bmin;
49 fMaxImpactParam=bmax;
50 }
51 virtual void KeepFullEvent();
52 virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
53 virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
54 virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
55 virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
eb342d2d 56 virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
110410f9 57 virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
58 virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
2705454f 59 virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
eb342d2d 60 AliGenHijing & operator=(const AliGenHijing & rhs);
110410f9 61// Physics Routines
62 virtual void EvaluateCrossSections();
21ce2e6f 63 virtual TGraph* CrossSection() {return fDsigmaDb;}
64 virtual TGraph* BinaryCollisions() {return fDnDb;}
eb342d2d 65 protected:
66 Bool_t SelectFlavor(Int_t pid);
3b8bd63f 67 void MakeHeader();
68
110410f9 69 protected:
3b8bd63f 70 TString fFrame; // Reference frame
71 TString fProjectile; // Projectile
72 TString fTarget; // Target
73 Int_t fAProjectile; // Projectile A
74 Int_t fZProjectile; // Projectile Z
75 Int_t fATarget; // Target A
76 Int_t fZTarget; // Target Z
110410f9 77 Float_t fMinImpactParam; // minimum impact parameter
78 Float_t fMaxImpactParam; // maximum impact parameter
3b8bd63f 79 Int_t fKeep; // Flag to keep full event information
80 Int_t fQuench; // Flag to switch on jet quenching
81 Int_t fShadowing; // Flag to switch on voclear effects on parton distribution function
82 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
83 Int_t fTrigger; // Trigger type
84 Int_t fEvaluate; // Evaluate total and partial cross-sections
85 Int_t fSelectAll; // Flag to write the full event
86 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
3b8bd63f 87 Float_t fEnergyCMS; // Centre of mass energy
88 Float_t fKineBias; // Bias from kinematic selection
89 Int_t fTrials; // Number of trials
90 TArrayI fParentSelect; // Parent particles to be selected
91 TArrayI fChildSelect; // Decay products to be selected
92 Float_t fXsection; // Cross-section
93 THijing *fHijing; // Hijing
94 Float_t fPtHardMin; // lower pT-hard cut
95 Float_t fPtHardMax; // higher pT-hard cut
2705454f 96 Int_t fSpectators; // put spectators on stack
21ce2e6f 97 TGraph* fDsigmaDb; // dSigma/db for the system
98 TGraph* fDnDb; // dNBinaryCollisions/db
110410f9 99 private:
110410f9 100 // adjust the weight from kinematic cuts
101 void AdjustWeights();
102 // check seleted daughters
103 Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles);
608708ba 104 // check if stable
105 Bool_t Stable(TParticle* particle);
106
110410f9 107 ClassDef(AliGenHijing,1) // AliGenerator interface to Hijing
108};
109#endif
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