Count total number of trials. Print mean Q, x1, x2.
[u/mrichter/AliRoot.git] / EVGEN / AliGenPythia.h
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a0134e39 1#ifndef ALIGENPYTHIA_H
2#define ALIGENPYTHIA_H
3da30618 3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
6d4dd317 8//
9// Generator using the TPythia interface (via AliPythia)
10// to generate pp collisions.
11// Using SetNuclei() also nuclear modifications to the structure functions
12// can be taken into account. This makes, of course, only sense for the
13// generation of the products of hard processes (heavy flavor, jets ...)
14//
15// andreas.morsch@cern.ch
16//
f87cfe57 17
fff02fee 18#include "AliGenMC.h"
f1a48a38 19#include "AliPythia.h"
f87cfe57 20
21class AliPythia;
22class TParticle;
fe4da5cc 23
fff02fee 24class AliGenPythia : public AliGenMC
fe4da5cc 25{
fe4da5cc 26 public:
719b6b8a 27
28 typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
29 typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
30
fe4da5cc 31 AliGenPythia();
32 AliGenPythia(Int_t npart);
f87cfe57 33 AliGenPythia(const AliGenPythia &Pythia);
fe4da5cc 34 virtual ~AliGenPythia();
35 virtual void Generate();
36 virtual void Init();
a0b2b296 37 // set a cut on the Z coord. of the primary vertex (cm)
a0b2b296 38 //
11dfaf8d 39 virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
fe4da5cc 40 // select process type
f1a48a38 41 virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
fe4da5cc 42 // select structure function
6d4dd317 43 virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;}
fe4da5cc 44 // select pt of hard scattering
f1a48a38 45 virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
46 {fPtHardMin = ptmin; fPtHardMax = ptmax; }
f953bc79 47 virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
48 {fYHardMin = ymin; fYHardMax = ymax; }
fe4da5cc 49 // set centre of mass energy
f1a48a38 50 virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
811826d8 51 // treat protons as inside nuclei
52 virtual void SetNuclei(Int_t a1, Int_t a2);
988b118b 53 virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
54 {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
55 virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
56 {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
b2bb450d 57 virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
58 {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
59 virtual void SetGammaPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
60 {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
719b6b8a 61 // Set option for feed down from higher family
62 virtual void SetFeedDownHigherFamily(Bool_t opt) {
63 fFeedDownOpt = opt;
64 }
65 // Set option for selecting particles kept in stack according to flavor
66 // or to parent selection
67 virtual void SetStackFillOpt(StackFillOpt_t opt) {
68 fStackFillOpt = opt;
69 }
70 // Set fragmentation option
71 virtual void SetFragmentation(const Bool_t opt) {
72 fFragmentation = opt;
73 }
74 // Set counting mode
75 virtual void SetCountMode(const CountMode_t mode) {
76 fCountMode = mode;
77 }
b2bb450d 78
fe4da5cc 79 // get cross section of process
651cd38e 80 virtual Float_t GetXsection() const {return fXsection;}
81 // Getters
82 virtual Process_t GetProcess() {return fProcess;}
83 virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;}
84 virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax)
85 {ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;}
86 virtual Float_t GetEnergyCMS() {return fEnergyCMS;}
87 virtual void GetNuclei(Int_t& a1, Int_t& a2)
88 {a1 = fNucA1; a2 = fNucA2;}
89 virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax)
90 {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
91 virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax)
92 {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
93 virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax)
94 {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
95 virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax)
96 {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
97 //
98 virtual void FinishRun();
ea8b656d 99 Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2) const;
9faa0850 100
f87cfe57 101 // Assignment Operator
102 AliGenPythia & operator=(const AliGenPythia & rhs);
a0134e39 103 protected:
6d4dd317 104 // adjust the weight from kinematic cuts
105 void AdjustWeights();
106 Int_t GenerateMB();
107 void MakeHeader() const;
108
c5d36e84 109 TClonesArray* fParticles; //Particle List
110
111 Process_t fProcess; //Process type
112 StrucFunc_t fStrucFunc; //Structure Function
113 Float_t fEnergyCMS; //Centre of mass energy
114 Float_t fKineBias; //!Bias from kinematic selection
8a8f459f 115 Int_t fTrials; //!Number of trials for current event
116 Int_t fTrialsRun; //!Number of trials for run
117 Float_t fQ; //Mean Q
118 Float_t fX1; //Mean x1
119 Float_t fX2; //Mean x2
120 Int_t fNev; //Number of events
c5d36e84 121 Int_t fFlavorSelect; //Heavy Flavor Selection
122 Float_t fXsection; //Cross-section
123 AliPythia *fPythia; //!Pythia
124 Float_t fPtHardMin; //lower pT-hard cut
125 Float_t fPtHardMax; //higher pT-hard cut
f953bc79 126 Float_t fYHardMin; //lower y-hard cut
127 Float_t fYHardMax; //higher y-hard cut
c5d36e84 128 Int_t fNucA1; //mass number nucleus side 1
129 Int_t fNucA2; //mass number nucleus side 2
130 Bool_t fFullEvent; //!Write Full event if true
131 AliDecayer *fDecayer; //!Pointer to the decayer instance
132 Int_t fDebugEventFirst; //!First event to debug
133 Int_t fDebugEventLast; //!Last event to debug
6d4dd317 134 Float_t fEtaMinJet; //Minimum eta of triggered Jet
135 Float_t fEtaMaxJet; //Maximum eta of triggered Jet
136 Float_t fPhiMinJet; //Minimum phi of triggered Jet
137 Float_t fPhiMaxJet; //Maximum phi of triggered Jet
b2bb450d 138
6d4dd317 139 Float_t fEtaMinGamma; // Minimum eta of triggered gamma
140 Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
141 Float_t fPhiMinGamma; // Minimum phi of triggered gamma
142 Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
988b118b 143
719b6b8a 144 StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
145 // that flavour or only with selected
146 // parents and their decays
147 Bool_t fFeedDownOpt; // Option to set feed down from higher
148 // quark families (e.g. b->c)
149 Bool_t fFragmentation; // Option to activate fragmentation by Pythia
150 //
ea8b656d 151
152 CountMode_t fCountMode; // Options for counting when the event will be finished.
719b6b8a 153 // fCountMode = kCountAll --> All particles that end up in the
154 // stack are counted
155 // fCountMode = kCountParents --> Only selected parents are counted
156 // fCountMode = kCountTrackabless --> Only particles flagged for tracking
157 // are counted
6d4dd317 158 //
8a8f459f 159 ClassDef(AliGenPythia,3) // AliGenerator interface to Pythia
fe4da5cc 160};
161#endif
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