#ifndef ALIGENHIJING_H #define ALIGENHIJING_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ /* $Id$ */ // Generator using HIJING as an external generator // The main HIJING options are accessable for the user through this interface. // andreas.morsch@cern.ch #include "AliGenMC.h" #include #include class THijing; class TArrayI; class TParticle; class TClonesArray; class TGraph; class AliGenHijing : public AliGenMC { enum {kNoTrigger, kHardProcesses, kDirectPhotons}; public: AliGenHijing(); AliGenHijing(Int_t npart); AliGenHijing(const AliGenHijing &Hijing); virtual ~AliGenHijing(); virtual void Generate(); virtual void Init(); // set centre of mass energy virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;} virtual void SetReferenceFrame(TString frame="CMS") {fFrame=frame;} virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.) {fMinImpactParam=bmin; fMaxImpactParam=bmax;} virtual void KeepFullEvent(); virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;} virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;} virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;} virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;} virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;} virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;} virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;} virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;} virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;} virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;} virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;} virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;} 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 SetBoostLHC(Int_t flag = 0) {fLHC = flag;} // Getters virtual Float_t GetEnergyCMS() {return fEnergyCMS;} virtual TString GetReferenceFrame() {return fFrame;} virtual void GetProjectile(TString& tar, Int_t& a, Int_t& z) {tar = fProjectile; a = fAProjectile; z = fZProjectile;} virtual void GetTarget(TString& tar, Int_t& a, Int_t& z) {tar = fTarget; a = fATarget; z = fZTarget;} virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) {bmin = fMinImpactParam; bmax = fMaxImpactParam;} virtual Int_t GetJetQuenching() {return fQuench;} virtual Int_t GetShadowing() {return fShadowing;} virtual Int_t GetTrigger() {return fTrigger;} virtual Int_t GetFlavor() {return fFlavor;} virtual Int_t GetRadiation() {return fRadiation;} virtual Int_t GetSpectators() {return fSpectators;} virtual Float_t GetPtJet() {return fPtMinJet;} 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();} // Physics Routines virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;} virtual void EvaluateCrossSections(); virtual TGraph* CrossSection() {return fDsigmaDb;} virtual TGraph* BinaryCollisions() {return fDnDb;} virtual Bool_t CheckTrigger(); // AliGenHijing & operator=(const AliGenHijing & rhs); protected: Bool_t SelectFlavor(Int_t pid); void MakeHeader(); private: void Copy(TObject &rhs) const; protected: TString fFrame; // Reference frame Float_t fMinImpactParam; // minimum impact parameter Float_t fMaxImpactParam; // maximum impact parameter Int_t fKeep; // Flag to keep full event information Int_t fQuench; // Flag to switch on jet quenching Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma Int_t fTrigger; // Trigger type Int_t fEvaluate; // Evaluate total and partial cross-sections Int_t fSelectAll; // Flag to write the full event Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty Float_t fEnergyCMS; // Centre of mass energy Float_t fKineBias; // Bias from kinematic selection Int_t fTrials; // Number of trials TArrayI fParentSelect; // Parent particles to be selected TArrayI fChildSelect; // Decay products to be selected Float_t fXsection; // Cross-section THijing *fHijing; //!Hijing Float_t fPtHardMin; // lower pT-hard cut Float_t fPtHardMax; // higher pT-hard cut Int_t fSpectators; // put spectators on stack TGraph* fDsigmaDb; // dSigma/db for the system TGraph* fDnDb; // dNBinaryCollisions/db Float_t fPtMinJet; // Minimum Pt of triggered Jet Float_t fEtaMinJet; // Minimum eta of triggered Jet Float_t fEtaMaxJet; // Maximum eta of triggered Jet Float_t fPhiMinJet; // At least one of triggered Jets must be in this Float_t fPhiMaxJet; // phi range Int_t fRadiation; // Flag to switch on/off initial and final state radiation Int_t fSimpleJet; // Flag to produce simple tiggered jet topology Int_t fNoGammas; // Don't write gammas if flag "on" // ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons Int_t fSpecn; // Num. of spectator neutrons Int_t fSpecp; // Num. of spectator protons Int_t fLHC; // Assume LHC as lab frame private: // adjust the weight from kinematic cuts void AdjustWeights(); // check seleted daughters Bool_t DaughtersSelection(TParticle* iparticle); // check if stable Bool_t Stable(TParticle* particle); ClassDef(AliGenHijing,4) // AliGenerator interface to Hijing }; #endif