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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 | |
12 | #include "AliGenerator.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; |
110410f9 | 20 | |
21 | class AliGenHijing : public AliGenerator | |
22 | { | |
23 | enum {kNoTrigger, kHardProcesses, kDirectPhotons}; | |
24 | ||
25 | public: | |
26 | AliGenHijing(); | |
27 | AliGenHijing(Int_t npart); | |
28 | AliGenHijing(const AliGenHijing &Hijing); | |
29 | virtual ~AliGenHijing(); | |
30 | virtual void Generate(); | |
31 | virtual void Init(); | |
32 | // set centre of mass energy | |
33 | virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;} | |
59d7832e | 34 | virtual void SetReferenceFrame(TString frame="CMS") |
3b8bd63f | 35 | {fFrame=frame;} |
59d7832e | 36 | virtual void SetProjectile(TString proj="A", |
3b8bd63f | 37 | Int_t a=208, Int_t z=82) |
110410f9 | 38 | {fProjectile = proj; |
39 | fAProjectile = a; | |
40 | fZProjectile = z;} | |
59d7832e | 41 | virtual void SetTarget(TString tar="A", |
3b8bd63f | 42 | Int_t a=208, Int_t z=82) |
110410f9 | 43 | {fTarget = tar; |
44 | fATarget = a; | |
45 | fZTarget =z;} | |
46 | virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax =15.) | |
47 | { fMinImpactParam=bmin; | |
48 | fMaxImpactParam=bmax; | |
49 | } | |
50 | virtual void KeepFullEvent(); | |
51 | virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;} | |
52 | virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;} | |
53 | virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;} | |
54 | virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;} | |
eb342d2d | 55 | virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;} |
110410f9 | 56 | virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;} |
57 | virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;} | |
2705454f | 58 | virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;} |
eb342d2d | 59 | AliGenHijing & operator=(const AliGenHijing & rhs); |
110410f9 | 60 | // Physics Routines |
61 | virtual void EvaluateCrossSections(); | |
eb342d2d | 62 | protected: |
63 | Bool_t SelectFlavor(Int_t pid); | |
3b8bd63f | 64 | void MakeHeader(); |
65 | ||
110410f9 | 66 | protected: |
3b8bd63f | 67 | TString fFrame; // Reference frame |
68 | TString fProjectile; // Projectile | |
69 | TString fTarget; // Target | |
70 | Int_t fAProjectile; // Projectile A | |
71 | Int_t fZProjectile; // Projectile Z | |
72 | Int_t fATarget; // Target A | |
73 | Int_t fZTarget; // Target Z | |
110410f9 | 74 | Float_t fMinImpactParam; // minimum impact parameter |
75 | Float_t fMaxImpactParam; // maximum impact parameter | |
3b8bd63f | 76 | Int_t fKeep; // Flag to keep full event information |
77 | Int_t fQuench; // Flag to switch on jet quenching | |
78 | Int_t fShadowing; // Flag to switch on voclear effects on parton distribution function | |
79 | Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma | |
80 | Int_t fTrigger; // Trigger type | |
81 | Int_t fEvaluate; // Evaluate total and partial cross-sections | |
82 | Int_t fSelectAll; // Flag to write the full event | |
83 | Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty | |
3b8bd63f | 84 | Float_t fEnergyCMS; // Centre of mass energy |
85 | Float_t fKineBias; // Bias from kinematic selection | |
86 | Int_t fTrials; // Number of trials | |
87 | TArrayI fParentSelect; // Parent particles to be selected | |
88 | TArrayI fChildSelect; // Decay products to be selected | |
89 | Float_t fXsection; // Cross-section | |
90 | THijing *fHijing; // Hijing | |
91 | Float_t fPtHardMin; // lower pT-hard cut | |
92 | Float_t fPtHardMax; // higher pT-hard cut | |
2705454f | 93 | Int_t fSpectators; // put spectators on stack |
110410f9 | 94 | |
95 | private: | |
96 | // check if particle is selected as parent particle | |
97 | Bool_t ParentSelected(Int_t ip); | |
98 | // check if particle is selected as child particle | |
99 | Bool_t ChildSelected(Int_t ip); | |
100 | // all kinematic selection cuts go here | |
101 | Bool_t KinematicSelection(TParticle *particle); | |
102 | // adjust the weight from kinematic cuts | |
103 | void AdjustWeights(); | |
104 | // check seleted daughters | |
105 | Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles); | |
608708ba | 106 | // check if stable |
107 | Bool_t Stable(TParticle* particle); | |
108 | ||
110410f9 | 109 | ClassDef(AliGenHijing,1) // AliGenerator interface to Hijing |
110 | }; | |
111 | #endif | |
112 | ||
113 | ||
114 | ||
115 | ||
116 |