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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 | 16 | class THijing; |
110410f9 | 17 | class TArrayI; |
18 | class TParticle; | |
b23a502f | 19 | class TClonesArray; |
21ce2e6f | 20 | class TGraph; |
110410f9 | 21 | |
55d6adcf | 22 | class 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 | |
b46f2676 | 99 | // ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons |
100 | Int_t fSpecn; // Num. of spectator neutrons | |
101 | Int_t fSpecp; // Num. of spectator protons | |
102 | ||
110410f9 | 103 | private: |
110410f9 | 104 | // adjust the weight from kinematic cuts |
105 | void AdjustWeights(); | |
106 | // check seleted daughters | |
107 | Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles); | |
608708ba | 108 | // check if stable |
109 | Bool_t Stable(TParticle* particle); | |
110 | ||
110410f9 | 111 | ClassDef(AliGenHijing,1) // AliGenerator interface to Hijing |
112 | }; | |
113 | #endif | |
114 | ||
115 | ||
116 | ||
117 | ||
118 |