CTEQ5M added (R. Guernane)
[u/mrichter/AliRoot.git] / THerwig / AliGenHerwig.h
CommitLineData
618e1dc0 1#ifndef ALIGENHERWIG_H
2#define ALIGENHERWIG_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 HERWIG as an external generator
9// The main HERWIG options are accessable for the user through this interface.
c4ff35db 10// Author Andreas Morsch
11// andreas.morsch@cern.ch
618e1dc0 12
13#include "AliGenMC.h"
14#include <TString.h>
15#include <TArrayI.h>
16#include <AliRndm.h>
17#include <AliStructFuncType.h>
18
19class THerwig6;
20class TArrayI;
21class TParticle;
22class TClonesArray;
23
24
25class AliGenHerwig : public AliGenMC
26
27{
28 enum {kNoTrigger, kHardProcesses, kDirectPhotons};
29
30 public:
31 AliGenHerwig();
32 AliGenHerwig(Int_t npart);
33 AliGenHerwig(const AliGenHerwig &Herwig);
34 virtual ~AliGenHerwig();
35 virtual void Generate();
36 virtual void Init();
37 // set centre of mass energy
38 virtual void SetBeamMomenta(Float_t p1=7000., Float_t p2=7000.)
39 {fMomentum1 = p1; fMomentum2 = p2;}
93831bcf 40 virtual void SetProcess(Int_t proc) {fProcess = proc;}
618e1dc0 41 virtual void KeepFullEvent();
42 virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
43 virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
44 virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
45 virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
46 AliGenHerwig & operator=(const AliGenHerwig & rhs);
47 virtual void SetStrucFunc(StrucFunc_t func = kGRVHO)
48 {fStrucFunc = func;}
49 virtual void SetPtHardMin(Double_t pt) {fPtHardMin=pt;}
50 virtual void SetPtRMS(Double_t pt) {fPtRMS=pt;}
51 virtual void SetMaxPr(Int_t i) {fMaxPr=i;}
52 virtual void SetMaxErrors(Int_t i) {fMaxErrors=i;}
53 virtual void FinishRun();
54 virtual void SetEnSoft(Double_t e) {fEnSoft=e;}
55 protected:
56 Bool_t SelectFlavor(Int_t pid);
57
58 protected:
618e1dc0 59 TString fAutPDF; // PDF group
60 Int_t fModPDF; // PDF set
61 StrucFunc_t fStrucFunc; //Structure Function
62 Int_t fKeep; // Flag to keep full event information
63 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
64 Int_t fTrigger; // Trigger type
65 Int_t fSelectAll; // Flag to write the full event
66 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
67 Float_t fEnergyCMS; // Centre of mass energy
68 Float_t fMomentum1; // Momentum of projectile
69 Float_t fMomentum2; // Momentum of target
70 Float_t fKineBias; // Bias from kinematic selection
71 Int_t fTrials; // Number of trials
618e1dc0 72 Float_t fXsection; // Cross-section
73 THerwig6 *fHerwig; // Herwig
74 Int_t fProcess; // Process number
75 Double_t fPtHardMin; // lower pT-hard cut
76 Double_t fPtRMS; // intrinsic pt of incoming hadrons
77 Int_t fMaxPr; // maximum number of events to print out
78 Int_t fMaxErrors; // maximum number of errors allowed
79 Double_t fEnSoft; // change on soft energy distribution
80
81 private:
82 // check if particle is selected as parent particle
83 Bool_t ParentSelected(Int_t ip);
84 // check if particle is selected as child particle
85 Bool_t ChildSelected(Int_t ip);
86 // adjust the weight from kinematic cuts
87 void AdjustWeights();
88 // check seleted daughters
89 Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles);
90 // check if stable
91 Bool_t Stable(TParticle* particle);
92
93 void InitPDF();
94
95 ClassDef(AliGenHerwig,1) // AliGenerator interface to Herwig
96};
97#endif
98
99
100
101
102