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FindROOT + dictionary generating macro
[u/mrichter/AliRoot.git] / THijing / AliGenHijing.h
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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 "AliGenHijingEventHeader.h"
14#include <TString.h>
15
16class THijing;
17class TParticle;
18class TClonesArray;
19class TGraph;
20
21
22class AliGenHijing : public AliGenMC
23{
24 enum {kNoTrigger, kHardProcesses, kDirectPhotons};
25
26 public:
27 AliGenHijing();
28 AliGenHijing(Int_t npart);
29 virtual ~AliGenHijing();
30 virtual void Generate();
31 virtual void Init();
32 virtual void SetSeed(UInt_t seed);
33 // set centre of mass energy
34 virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
35 virtual void SetReferenceFrame(TString frame="CMS")
36 {fFrame=frame;}
37
38 virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.)
39 {fMinImpactParam=bmin; fMaxImpactParam=bmax;}
40 virtual void KeepFullEvent();
41 virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
42 virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
43 virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
44 virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
45 virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
46 virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
47 virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
48 virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;}
49 virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
50 virtual void SetPtHardMin(Float_t ptmin) {fPtHardMin = ptmin;}
51 virtual void SetPtHardMax(Float_t ptmax) {fPtHardMax = ptmax;}
52 virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;}
53 virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;}
54 virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;}
55
56 virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
57 {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
58 virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
59 {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
60 virtual void SetBoostLHC(Int_t flag = 0) {fLHC = flag;}
61 virtual void SetRandomPz(Bool_t flag = 0) {fRandomPz = flag;}
62 virtual void SwitchOffHeavyQuarks(Bool_t flag = kTRUE) {fNoHeavyQuarks = flag;}
63 virtual void SetSigmaNN(Float_t val) {fSigmaNN = val;}
64 virtual void SetNoElas(Bool_t b) {fNoElas = b; }
65
66// Getters
67 virtual TString GetReferenceFrame() const {return fFrame;}
68 virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const
69 {bmin = fMinImpactParam; bmax = fMaxImpactParam;}
70 virtual Int_t GetJetQuenching() const {return fQuench;}
71 virtual Int_t GetShadowing() const {return fShadowing;}
72 virtual Int_t GetTrigger() const {return fTrigger;}
73 virtual Int_t GetFlavor() const {return fFlavor;}
74 virtual Int_t GetRadiation() const {return fRadiation;}
75 virtual Int_t GetSpectators() const {return fSpectators;}
76 virtual Float_t GetPtHardMin() const {return fPtHardMin;}
77 virtual Float_t GetPtHardMax() const {return fPtHardMax;}
78 virtual Float_t GetPtJet() const {return fPtMinJet;}
79 virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax) const
80 {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
81 virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
82 {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180./TMath::Pi();}
83 THijing *GetTHijing() const {return fHijing;}
84 virtual Float_t GetSigmaNN() const {return fSigmaNN;}
85
86// Physics Routines
87 virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
88 virtual void EvaluateCrossSections();
89 virtual TGraph* CrossSection() {return fDsigmaDb;}
90 virtual TGraph* BinaryCollisions() {return fDnDb;}
91 virtual Bool_t CheckTrigger();
92//
93 protected:
94 Bool_t SelectFlavor(Int_t pid);
95 void MakeHeader();
96 protected:
97 TString fFrame; // Reference frame
98 Float_t fMinImpactParam; // minimum impact parameter
99 Float_t fMaxImpactParam; // maximum impact parameter
100 Int_t fKeep; // Flag to keep full event information
101 Int_t fQuench; // Flag to switch on jet quenching
102 Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
103 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
104 Int_t fTrigger; // Trigger type
105 Int_t fEvaluate; // Evaluate total and partial cross-sections
106 Int_t fSelectAll; // Flag to write the full event
107 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
108 Float_t fKineBias; // Bias from kinematic selection
109 Int_t fTrials; // Number of trials
110 Float_t fXsection; // Cross-section
111 THijing *fHijing; //!Hijing
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// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
126 Int_t fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus
127 Int_t fProjectileSpecp;// Num. of spectator protons from projectile nucleus
128 Int_t fTargetSpecn; // Num. of spectator neutrons from target nucleus
129 Int_t fTargetSpecp; // Num. of spectator protons from target nucleus
130 Int_t fLHC; // Assume LHC as lab frame
131 Bool_t fRandomPz; // Randomise sign of pz event by event
132 Bool_t fNoHeavyQuarks; // If true no heavy quarks are produced
133 AliGenHijingEventHeader fHeader; // MC Header
134 Float_t fSigmaNN; // If not -1 set sigmaNN (HIPR1)
135 Bool_t fNoElas; // If true switch off elastic scattering
136
137 private:
138 AliGenHijing(const AliGenHijing &Hijing);
139 AliGenHijing & operator=(const AliGenHijing & rhs);
140
141 // adjust the weight from kinematic cuts
142 void AdjustWeights();
143 // check seleted daughters
144 Bool_t DaughtersSelection(const TParticle* iparticle);
145 // check if stable
146 Bool_t Stable(const TParticle* particle) const;
147
148 ClassDef(AliGenHijing, 9) // AliGenerator interface to Hijing
149};
150#endif