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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; | |
7a186781 | 46 | fZTarget = z;} |
47 | virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.) | |
110410f9 | 48 | { fMinImpactParam=bmin; |
49 | fMaxImpactParam=bmax; | |
50 | } | |
51 | virtual void KeepFullEvent(); | |
ed6361b0 | 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;} | |
56 | virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;} | |
57 | virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;} | |
58 | virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;} | |
332c8db0 | 59 | virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;} |
2705454f | 60 | virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;} |
ed6361b0 | 61 | virtual void SetPtMinJet(Float_t ptmin) {fPtMinJet = ptmin;} |
e4ffda63 | 62 | virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.) |
63 | {fEtaMinJet = etamin; fEtaMaxJet = etamax;} | |
7a186781 | 64 | virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.) |
6018641b | 65 | {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;} |
cc71f2d3 | 66 | virtual void SetBoostLHC(Int_t flag=0) {fLHC = flag;} |
67 | ||
68 | ||
eb342d2d | 69 | AliGenHijing & operator=(const AliGenHijing & rhs); |
110410f9 | 70 | // Physics Routines |
71 | virtual void EvaluateCrossSections(); | |
cc71f2d3 | 72 | virtual void Boost(TClonesArray* particles); |
21ce2e6f | 73 | virtual TGraph* CrossSection() {return fDsigmaDb;} |
e4ffda63 | 74 | virtual TGraph* BinaryCollisions() {return fDnDb;} |
75 | virtual Bool_t CheckTrigger(); | |
76 | ||
eb342d2d | 77 | protected: |
78 | Bool_t SelectFlavor(Int_t pid); | |
3b8bd63f | 79 | void MakeHeader(); |
80 | ||
110410f9 | 81 | protected: |
3b8bd63f | 82 | TString fFrame; // Reference frame |
83 | TString fProjectile; // Projectile | |
84 | TString fTarget; // Target | |
85 | Int_t fAProjectile; // Projectile A | |
86 | Int_t fZProjectile; // Projectile Z | |
87 | Int_t fATarget; // Target A | |
88 | Int_t fZTarget; // Target Z | |
110410f9 | 89 | Float_t fMinImpactParam; // minimum impact parameter |
90 | Float_t fMaxImpactParam; // maximum impact parameter | |
3b8bd63f | 91 | Int_t fKeep; // Flag to keep full event information |
92 | Int_t fQuench; // Flag to switch on jet quenching | |
93 | Int_t fShadowing; // Flag to switch on voclear effects on parton distribution function | |
94 | Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma | |
95 | Int_t fTrigger; // Trigger type | |
96 | Int_t fEvaluate; // Evaluate total and partial cross-sections | |
97 | Int_t fSelectAll; // Flag to write the full event | |
98 | Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty | |
3b8bd63f | 99 | Float_t fEnergyCMS; // Centre of mass energy |
100 | Float_t fKineBias; // Bias from kinematic selection | |
101 | Int_t fTrials; // Number of trials | |
102 | TArrayI fParentSelect; // Parent particles to be selected | |
103 | TArrayI fChildSelect; // Decay products to be selected | |
104 | Float_t fXsection; // Cross-section | |
105 | THijing *fHijing; // Hijing | |
106 | Float_t fPtHardMin; // lower pT-hard cut | |
107 | Float_t fPtHardMax; // higher pT-hard cut | |
2705454f | 108 | Int_t fSpectators; // put spectators on stack |
21ce2e6f | 109 | TGraph* fDsigmaDb; // dSigma/db for the system |
ed6361b0 | 110 | TGraph* fDnDb; // dNBinaryCollisions/db |
332c8db0 | 111 | Float_t fPtMinJet; // Minimum Pt of triggered Jet |
e4ffda63 | 112 | Float_t fEtaMinJet; // Minimum eta of triggered Jet |
113 | Float_t fEtaMaxJet; // Maximum eta of triggered Jet | |
7a186781 | 114 | Float_t fPhiMinJet; // At least one of triggered Jets must be in this |
115 | Float_t fPhiMaxJet; // phi range | |
332c8db0 | 116 | Int_t fRadiation; // Flag to switch on/off initial and final state radiation |
117 | ||
b46f2676 | 118 | // ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons |
119 | Int_t fSpecn; // Num. of spectator neutrons | |
120 | Int_t fSpecp; // Num. of spectator protons | |
cc71f2d3 | 121 | Int_t fLHC; // Assume LHC as lab frame |
122 | ||
110410f9 | 123 | private: |
110410f9 | 124 | // adjust the weight from kinematic cuts |
125 | void AdjustWeights(); | |
126 | // check seleted daughters | |
127 | Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles); | |
608708ba | 128 | // check if stable |
129 | Bool_t Stable(TParticle* particle); | |
130 | ||
2b00434a | 131 | ClassDef(AliGenHijing,2) // AliGenerator interface to Hijing |
110410f9 | 132 | }; |
133 | #endif | |
134 | ||
135 | ||
136 | ||
137 | ||
138 |