-#ifndef AliGenPythia_H
-#define AliGenPythia_H
+#ifndef ALIGENPYTHIA_H
+#define ALIGENPYTHIA_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
/* $Id$ */
-/////////////////////////////////////////////////////////
-// Manager and hits classes for set:MUON version 0 //
-/////////////////////////////////////////////////////////
-#include "AliGenerator.h"
-#include "TNamed.h"
-#include "TF1.h"
-#include "TArrayF.h"
-#include "TTree.h"
+//
+// Generator using the TPythia interface (via AliPythia)
+// to generate pp collisions.
+// Using SetNuclei() also nuclear modifications to the structure functions
+// can be taken into account. This makes, of course, only sense for the
+// generation of the products of hard processes (heavy flavor, jets ...)
+//
+// andreas.morsch@cern.ch
+//
+
+#include "AliGenMC.h"
#include "AliPythia.h"
-#include "TArrayI.h"
-#include "TParticle.h"
-class AliGenPythia : public AliGenerator
+class AliPythia;
+class TParticle;
+
+class AliGenPythia : public AliGenMC
{
- protected:
- Process_t fProcess;
- StrucFunc_t fStrucFunc;
- Decay_t fForceDecay;
- Float_t fEnergyCMS;
- Float_t fKineBias;
- Int_t fTrials;
- TArrayI fParentSelect;
- TArrayI fChildSelect;
- Float_t fXsection;
- AliPythia *fPythia;
- Float_t fPtHardMin;
- Float_t fPtHardMax;
-
- private:
- // check if particle is selected as parent particle
- Bool_t ParentSelected(Int_t ip);
- // check if particle is selected as child particle
- Bool_t ChildSelected(Int_t ip);
- // all kinematic selection cuts go here
- Bool_t KinematicSelection(TParticle *particle);
- // adjust the weight from kinematic cuts
- void AdjustWeights();
public:
+
+ typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
+ typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
+
AliGenPythia();
AliGenPythia(Int_t npart);
+ AliGenPythia(const AliGenPythia &Pythia);
virtual ~AliGenPythia();
virtual void Generate();
virtual void Init();
+ // set a cut on the Z coord. of the primary vertex (cm)
+ //
+ virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
// select process type
- virtual void SetProcess(Process_t proc=charm) {fProcess=proc;}
+ virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
// select structure function
- virtual void SetStrucFunc(StrucFunc_t func=GRV_HO) {fStrucFunc=func;}
+ virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;}
// select pt of hard scattering
- virtual void SetPtHard(Float_t ptmin=0, Float_t ptmax=1.e10)
- {fPtHardMin=ptmin; fPtHardMax=ptmax; }
+ virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
+ {fPtHardMin = ptmin; fPtHardMax = ptmax; }
+ virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
+ {fYHardMin = ymin; fYHardMax = ymax; }
// set centre of mass energy
- virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
- // force decay type
- virtual void SetForceDecay(Decay_t decay=semimuonic) {fForceDecay=decay;}
+ virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
+ // treat protons as inside nuclei
+ virtual void SetNuclei(Int_t a1, Int_t a2);
+ virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
+ {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
+ virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
+ {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
+ virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
+ {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
+ virtual void SetGammaPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
+ {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
+ // Set option for feed down from higher family
+ virtual void SetFeedDownHigherFamily(Bool_t opt) {
+ fFeedDownOpt = opt;
+ }
+ // Set option for selecting particles kept in stack according to flavor
+ // or to parent selection
+ virtual void SetStackFillOpt(StackFillOpt_t opt) {
+ fStackFillOpt = opt;
+ }
+ // Set fragmentation option
+ virtual void SetFragmentation(const Bool_t opt) {
+ fFragmentation = opt;
+ }
+ // Set counting mode
+ virtual void SetCountMode(const CountMode_t mode) {
+ fCountMode = mode;
+ }
+
// get cross section of process
- virtual Float_t GetXsection() {return fXsection;}
- // Check PDG code
- virtual Int_t CheckPDGCode(Int_t pdgcode);
+ virtual Float_t GetXsection() const {return fXsection;}
+ // Getters
+ virtual Process_t GetProcess() {return fProcess;}
+ virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;}
+ virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax)
+ {ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;}
+ virtual Float_t GetEnergyCMS() {return fEnergyCMS;}
+ virtual void GetNuclei(Int_t& a1, Int_t& a2)
+ {a1 = fNucA1; a2 = fNucA2;}
+ virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax)
+ {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
+ virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax)
+ {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
+ virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax)
+ {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
+ virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax)
+ {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
+ //
+ virtual void FinishRun();
+ Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2) const;
+
+ // Assignment Operator
+ AliGenPythia & operator=(const AliGenPythia & rhs);
+ protected:
+ // adjust the weight from kinematic cuts
+ void AdjustWeights();
+ Int_t GenerateMB();
+ void MakeHeader() const;
+
+ TClonesArray* fParticles; //Particle List
+
+ Process_t fProcess; //Process type
+ StrucFunc_t fStrucFunc; //Structure Function
+ Float_t fEnergyCMS; //Centre of mass energy
+ Float_t fKineBias; //!Bias from kinematic selection
+ Int_t fTrials; //!Number of trials for current event
+ Int_t fTrialsRun; //!Number of trials for run
+ Float_t fQ; //Mean Q
+ Float_t fX1; //Mean x1
+ Float_t fX2; //Mean x2
+ Int_t fNev; //Number of events
+ Int_t fFlavorSelect; //Heavy Flavor Selection
+ Float_t fXsection; //Cross-section
+ AliPythia *fPythia; //!Pythia
+ Float_t fPtHardMin; //lower pT-hard cut
+ Float_t fPtHardMax; //higher pT-hard cut
+ Float_t fYHardMin; //lower y-hard cut
+ Float_t fYHardMax; //higher y-hard cut
+ Int_t fNucA1; //mass number nucleus side 1
+ Int_t fNucA2; //mass number nucleus side 2
+ Bool_t fFullEvent; //!Write Full event if true
+ AliDecayer *fDecayer; //!Pointer to the decayer instance
+ Int_t fDebugEventFirst; //!First event to debug
+ Int_t fDebugEventLast; //!Last event to debug
+ Float_t fEtaMinJet; //Minimum eta of triggered Jet
+ Float_t fEtaMaxJet; //Maximum eta of triggered Jet
+ Float_t fPhiMinJet; //Minimum phi of triggered Jet
+ Float_t fPhiMaxJet; //Maximum phi of triggered Jet
+
+ Float_t fEtaMinGamma; // Minimum eta of triggered gamma
+ Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
+ Float_t fPhiMinGamma; // Minimum phi of triggered gamma
+ Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
+
+ StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
+ // that flavour or only with selected
+ // parents and their decays
+ Bool_t fFeedDownOpt; // Option to set feed down from higher
+ // quark families (e.g. b->c)
+ Bool_t fFragmentation; // Option to activate fragmentation by Pythia
+ //
- ClassDef(AliGenPythia,1)
+ CountMode_t fCountMode; // Options for counting when the event will be finished.
+ // fCountMode = kCountAll --> All particles that end up in the
+ // stack are counted
+ // fCountMode = kCountParents --> Only selected parents are counted
+ // fCountMode = kCountTrackabless --> Only particles flagged for tracking
+ // are counted
+ //
+ ClassDef(AliGenPythia,3) // AliGenerator interface to Pythia
};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff