Upadte of preprocessor by Raphaelle
[u/mrichter/AliRoot.git] / THijing / AliGenHijing.h
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36b81802 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
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
11
12#include "AliGenMC.h"
13#include <TString.h>
36b81802 14
15class THijing;
36b81802 16class TParticle;
17class TClonesArray;
18class TGraph;
19
20class AliGenHijing : public AliGenMC
21{
22 enum {kNoTrigger, kHardProcesses, kDirectPhotons};
23
24 public:
25 AliGenHijing();
26 AliGenHijing(Int_t npart);
27 AliGenHijing(const AliGenHijing &Hijing);
28 virtual ~AliGenHijing();
29 virtual void Generate();
30 virtual void Init();
31 // set centre of mass energy
32 virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
33 virtual void SetReferenceFrame(TString frame="CMS")
34 {fFrame=frame;}
0c85382f 35
36b81802 36 virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.)
37 {fMinImpactParam=bmin; fMaxImpactParam=bmax;}
38 virtual void KeepFullEvent();
39 virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
40 virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
41 virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
42 virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
43 virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
44 virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
45 virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
46 virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;}
47 virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
48 virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;}
49 virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;}
50 virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;}
51
52 virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
53 {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
54 virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
55 {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
56 virtual void SetBoostLHC(Int_t flag = 0) {fLHC = flag;}
b25b821e 57 virtual void SetRandomPz(Bool_t flag = 0) {fRandomPz = flag;}
cf57b268 58 virtual void AddHeader(AliGenEventHeader* header);
f82795ff 59 virtual void SwitchOffHeavyQuarks(Bool_t flag = kTRUE) {fNoHeavyQuarks = flag;}
60
61
36b81802 62// Getters
14cae7e9 63 virtual Float_t GetEnergyCMS() const {return fEnergyCMS;}
64 virtual TString GetReferenceFrame() const {return fFrame;}
65 virtual void GetProjectile(TString& tar, Int_t& a, Int_t& z) const
36b81802 66 {tar = fProjectile; a = fAProjectile; z = fZProjectile;}
14cae7e9 67 virtual void GetTarget(TString& tar, Int_t& a, Int_t& z) const
36b81802 68 {tar = fTarget; a = fATarget; z = fZTarget;}
14cae7e9 69 virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const
36b81802 70 {bmin = fMinImpactParam; bmax = fMaxImpactParam;}
14cae7e9 71 virtual Int_t GetJetQuenching() const {return fQuench;}
72 virtual Int_t GetShadowing() const {return fShadowing;}
73 virtual Int_t GetTrigger() const {return fTrigger;}
74 virtual Int_t GetFlavor() const {return fFlavor;}
75 virtual Int_t GetRadiation() const {return fRadiation;}
76 virtual Int_t GetSpectators() const {return fSpectators;}
77 virtual Float_t GetPtJet() const {return fPtMinJet;}
78 virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax) const
36b81802 79 {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
14cae7e9 80 virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
36b81802 81 {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180./TMath::Pi();}
82
83
84// Physics Routines
14cae7e9 85 virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
86 virtual void EvaluateCrossSections();
36b81802 87 virtual TGraph* CrossSection() {return fDsigmaDb;}
88 virtual TGraph* BinaryCollisions() {return fDnDb;}
89 virtual Bool_t CheckTrigger();
90//
91 AliGenHijing & operator=(const AliGenHijing & rhs);
92 protected:
93 Bool_t SelectFlavor(Int_t pid);
94 void MakeHeader();
36b81802 95 protected:
14cae7e9 96 TString fFrame; // Reference frame
36b81802 97 Float_t fMinImpactParam; // minimum impact parameter
98 Float_t fMaxImpactParam; // maximum impact parameter
99 Int_t fKeep; // Flag to keep full event information
100 Int_t fQuench; // Flag to switch on jet quenching
101 Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
102 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
103 Int_t fTrigger; // Trigger type
104 Int_t fEvaluate; // Evaluate total and partial cross-sections
105 Int_t fSelectAll; // Flag to write the full event
106 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
107 Float_t fEnergyCMS; // Centre of mass energy
108 Float_t fKineBias; // Bias from kinematic selection
109 Int_t fTrials; // Number of trials
36b81802 110 Float_t fXsection; // Cross-section
b88f5cea 111 THijing *fHijing; //!Hijing
36b81802 112 Float_t fPtHardMin; // lower pT-hard cut
113 Float_t fPtHardMax; // higher pT-hard cut
114 Int_t fSpectators; // put spectators on stack
115 TGraph* fDsigmaDb; // dSigma/db for the system
116 TGraph* fDnDb; // dNBinaryCollisions/db
117 Float_t fPtMinJet; // Minimum Pt of triggered Jet
118 Float_t fEtaMinJet; // Minimum eta of triggered Jet
119 Float_t fEtaMaxJet; // Maximum eta of triggered Jet
120 Float_t fPhiMinJet; // At least one of triggered Jets must be in this
121 Float_t fPhiMaxJet; // phi range
122 Int_t fRadiation; // Flag to switch on/off initial and final state radiation
123 Int_t fSimpleJet; // Flag to produce simple tiggered jet topology
124 Int_t fNoGammas; // Don't write gammas if flag "on"
125
126// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
f0c86dd6 127 Int_t fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus
128 Int_t fProjectileSpecp;// Num. of spectator protons from projectile nucleus
129 Int_t fTargetSpecn; // Num. of spectator neutrons from target nucleus
130 Int_t fTargetSpecp; // Num. of spectator protons from target nucleus
36b81802 131 Int_t fLHC; // Assume LHC as lab frame
f82795ff 132 Bool_t fRandomPz; // Randomise sign of pz event by event
133 Bool_t fNoHeavyQuarks; // If true no heavy quarks are produced
134
36b81802 135 private:
14cae7e9 136 void Copy(TObject &rhs) const;
36b81802 137 // adjust the weight from kinematic cuts
138 void AdjustWeights();
139 // check seleted daughters
140 Bool_t DaughtersSelection(TParticle* iparticle);
141 // check if stable
14cae7e9 142 Bool_t Stable(TParticle* particle) const;
36b81802 143
e5fefabc 144 ClassDef(AliGenHijing, 6) // AliGenerator interface to Hijing
36b81802 145};
146#endif
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