#ifndef ALIGENEMLIB_H #define ALIGENEMLIB_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ /* $Id: AliGenEMlib.h 30052 2008-11-25 14:54:18Z morsch $ */ ///////////////////////////////////////////////////////////////////////////// // // // Implementation of AliGenEMlib for electron, di-electron, and photon // // cocktail calculations. // // It is based on AliGenGSIlib. // // // // Responsible: R.Averbeck@gsi.de // // // ///////////////////////////////////////////////////////////////////////////// #include "AliGenLib.h" class TRandom; class AliGenEMlib :public AliGenLib { public: enum Particle_t{kPizero=0, kEta, kRho, kOmega, kEtaprime, kPhi, kJpsi, kDirectRealGamma, kDirectVirtGamma }; enum Centrality_t{kpp=0x0, k0005=0x1, k0510=0x2, k1020=0x3, k2030=0x4, k3040=0x5, k4050=0x6, k5060=0x7, k0010=0x8, k2040=0x9, k4060=0xA, k6080=0xB, k0020=0xC, k0040=0xD, k2080=0xE, k4080=0xF, kCentralities=0x10}; enum PtParamSet_t{kPizero7TeVpp=0x10, kPizeroEta7TeVpp=0x20, kPizero7TeVpplow=0x30, kPizeroEta7TeVpplow=0x40, kPizero7TeVpphigh=0x50, kPizeroEta7TeVpphigh=0x60, kPizero2760GeVpp=0x70, kPizeroEta2760GeVpp=0x80, kPizero2760GeVpplow=0x90, kPizeroEta2760GeVpplow=0xA0, kPizero2760GeVpphigh=0xB0, kPizeroEta2760GeVpphigh=0xC0, kPichargedPbPb=0xD0, kPizeroPbPb=0xE0, kPichargedPPb=0xF0 }; enum v2Sys_t{kLoV2Sys=-1, kNoV2Sys=0, kUpV2Sys=+1}; AliGenEMlib() { } ; static void SelectParams(Int_t ptSelect, Int_t centSelect=kpp, Int_t v2sys=kNoV2Sys) { fgSelectedPtParam=ptSelect; fgSelectedCentrality=centSelect; fgSelectedV2Systematic=v2sys; } GenFunc GetPt(Int_t param, const char * tname=0) const; GenFunc GetY(Int_t param, const char * tname=0) const; GenFuncIp GetIp(Int_t param, const char * tname=0) const; GenFunc GetV2(Int_t param, const char * tname=0) const; //private: // General functions static Int_t fgSelectedPtParam; // selected pT parameter static Int_t fgSelectedCentrality; // selected Centrality static Int_t fgSelectedV2Systematic; // selected v2 systematics, usefully values: -1,0,1 static Double_t PtModifiedHagedornThermal(Double_t pt, Double_t c, Double_t p0, Double_t p1, Double_t n, Double_t cT, Double_t T); static Double_t PtModifiedHagedornExp(Double_t pt, Double_t c, Double_t p0, Double_t p1, Double_t p2, Double_t n); static Double_t PtModifiedHagedornExp2(Double_t pt, Double_t c, Double_t a, Double_t b, Double_t p0, Double_t p1, Double_t d, Double_t n); static Double_t PtTsallis(Double_t pt, Double_t m, Double_t c, Double_t T, Double_t n); static Double_t PtExponential(const Double_t *pt, const Double_t *param); static Double_t PtModifiedHagedornPowerlaw(const Double_t *pt, const Double_t *param); static Double_t PtDoublePowerlaw(const Double_t *pt, const Double_t *param); static Double_t IntegratedKrollWada(const Double_t *mh, const Double_t *); // direct gamma static Double_t PtPromptRealGamma(const Double_t *px, const Double_t *dummy); static Double_t PtPromptVirtGamma(const Double_t *px, const Double_t *dummy); static Double_t PtThermalRealGamma(const Double_t *px, const Double_t *dummy); static Double_t PtThermalVirtGamma(const Double_t *px, const Double_t *dummy); static Int_t IpDirectRealGamma(TRandom *ran); static Double_t PtDirectRealGamma(const Double_t *px, const Double_t *dummy); static Double_t YDirectRealGamma(const Double_t *py, const Double_t *dummy); static Double_t V2DirectRealGamma(const Double_t *px, const Double_t *dummy); static Int_t IpDirectVirtGamma(TRandom *ran); static Double_t PtDirectVirtGamma(const Double_t *px, const Double_t *dummy); static Double_t YDirectVirtGamma(const Double_t *py, const Double_t *dummy); static Double_t V2DirectVirtGamma(const Double_t *px, const Double_t *dummy); // Pizero static Int_t IpPizero(TRandom *ran); static Double_t PtPizero(const Double_t *px, const Double_t *dummy); static Double_t YPizero(const Double_t *py, const Double_t *dummy); static Double_t V2Pizero(const Double_t *px, const Double_t *dummy); // Eta static Int_t IpEta(TRandom *ran); static Double_t PtEta(const Double_t *px, const Double_t *dummy); static Double_t YEta(const Double_t *py, const Double_t *dummy); static Double_t V2Eta(const Double_t *px, const Double_t *dummy); // Rho static Int_t IpRho(TRandom *ran); static Double_t PtRho(const Double_t *px, const Double_t *dummy); static Double_t YRho(const Double_t *py, const Double_t *dummy); static Double_t V2Rho(const Double_t *py, const Double_t *dummy); // Omega static Int_t IpOmega(TRandom *ran); static Double_t PtOmega(const Double_t *px, const Double_t *dummy); static Double_t YOmega(const Double_t *py, const Double_t *dummy); static Double_t V2Omega(const Double_t *py, const Double_t *dummy); // Etaprime static Int_t IpEtaprime(TRandom *ran); static Double_t PtEtaprime(const Double_t *px, const Double_t *dummy); static Double_t YEtaprime(const Double_t *py, const Double_t *dummy); static Double_t V2Etaprime(const Double_t *py, const Double_t *dummy); // Phi static Int_t IpPhi(TRandom *ran); static Double_t PtPhi(const Double_t *px, const Double_t *dummy); static Double_t YPhi(const Double_t *py, const Double_t *dummy); static Double_t V2Phi(const Double_t *py, const Double_t *dummy); // Jpsi static Int_t IpJpsi(TRandom *ran); static Double_t PtJpsi(const Double_t *px, const Double_t *dummy); static Double_t YJpsi(const Double_t *py, const Double_t *dummy); static Double_t V2Jpsi(const Double_t *py, const Double_t *dummy); // General //static Double_t PtFlat(const Double_t *px, const Double_t *dummy); static Double_t YFlat(Double_t y); static Double_t MtScal(Double_t pt, Int_t np); static Double_t V2Param(const Double_t *px, const Double_t *param); static Double_t V2Flat(const Double_t *px, const Double_t *param); static Double_t KEtScal(Double_t pt, Int_t np); static Double_t GetTAA(Int_t cent); static Double_t CrossOverLc(double a, double b, double x); static Double_t CrossOverRc(double a, double b, double x); static const Double_t fgkV2param[16][15]; // parameters of pi v2 static const Double_t fgkRawPtOfV2Param[16][10]; // parameters of the raw pt spectrum of v2 analysys static const Double_t fgkThermPtParam[16][2]; // parameters of thermal gamma pt static const Double_t fgkHM[8]; // particle masses static const Double_t fgkMtFactor[2][8]; // mt scaling factor ClassDef(AliGenEMlib,0) }; #endif