#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 "AliGenHijingEventHeader.h" #include class THijing; class TParticle; class TClonesArray; class TGraph; class AliGenHijing : public AliGenMC { enum {kNoTrigger, kHardProcesses, kDirectPhotons}; public: AliGenHijing(); AliGenHijing(Int_t npart); 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 SetPtHardMin(Float_t ptmin) {fPtHardMin = ptmin;} virtual void SetPtHardMax(Float_t ptmax) {fPtHardMax = ptmax;} 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;} virtual void SetRandomPz(Bool_t flag = 0) {fRandomPz = flag;} virtual void SwitchOffHeavyQuarks(Bool_t flag = kTRUE) {fNoHeavyQuarks = flag;} virtual void SetSigmaNN(Float_t val) {fSigmaNN = val;} virtual void SetNoElas(Bool_t b) {fNoElas = b; } // Getters virtual TString GetReferenceFrame() const {return fFrame;} virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const {bmin = fMinImpactParam; bmax = fMaxImpactParam;} virtual Int_t GetJetQuenching() const {return fQuench;} virtual Int_t GetShadowing() const {return fShadowing;} virtual Int_t GetTrigger() const {return fTrigger;} virtual Int_t GetFlavor() const {return fFlavor;} virtual Int_t GetRadiation() const {return fRadiation;} virtual Int_t GetSpectators() const {return fSpectators;} virtual Float_t GetPtHardMin() const {return fPtHardMin;} virtual Float_t GetPtHardMax() const {return fPtHardMax;} virtual Float_t GetPtJet() const {return fPtMinJet;} virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax) const {etamin = fEtaMinJet; etamax = fEtaMaxJet;} virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180./TMath::Pi();} THijing *GetTHijing() const {return fHijing;} virtual Float_t GetSigmaNN() const {return fSigmaNN;} // 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(); // protected: Bool_t SelectFlavor(Int_t pid); void MakeHeader(); 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 fKineBias; // Bias from kinematic selection Int_t fTrials; // Number of trials 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 fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus Int_t fProjectileSpecp;// Num. of spectator protons from projectile nucleus Int_t fTargetSpecn; // Num. of spectator neutrons from target nucleus Int_t fTargetSpecp; // Num. of spectator protons from target nucleus Int_t fLHC; // Assume LHC as lab frame Bool_t fRandomPz; // Randomise sign of pz event by event Bool_t fNoHeavyQuarks; // If true no heavy quarks are produced AliGenHijingEventHeader fHeader; // MC Header Float_t fSigmaNN; // If not -1 set sigmaNN (HIPR1) Bool_t fNoElas; // If true switch off elastic scattering private: AliGenHijing(const AliGenHijing &Hijing); AliGenHijing & operator=(const AliGenHijing & rhs); // adjust the weight from kinematic cuts void AdjustWeights(); // check seleted daughters Bool_t DaughtersSelection(const TParticle* iparticle); // check if stable Bool_t Stable(const TParticle* particle) const; ClassDef(AliGenHijing, 9) // AliGenerator interface to Hijing }; #endif