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//*****************************************************************************
//
// Generator/Phokhara/Phokhara.h
//
// Algorithm runs event generator Phokhara (hep-ph/0710.4227v1)
// and stores output to transient store
//
// Nov 2007 Original BES3 code by Alexey Zhemchugov
//
//*****************************************************************************

#ifndef GENERATORMODULESPHOKHARA_H
#define GENERATORMODULESPHOKHARA_H

#include "HepMC/GenEvent.h"
#include "HepMC/GenParticle.h"

#include "GaudiKernel/Algorithm.h"
#include "GaudiKernel/ISvcLocator.h"

#include <vector>

using namespace std;

class Phokhara:public Algorithm 
{       
public:
 Phokhara(const string& name, ISvcLocator* pSvcLocator);
                
 StatusCode initialize();
 StatusCode execute();
 StatusCode finalize();
 StatusCode storeParticles();

private:
// jobOption params

 int m_nm;          // # of events to determine the maximum   
 int m_nlo;         // Born(0), NLO(1)
 double m_w;        // soft photon cutoff                
 int m_pion;        // mu+mu-(0),pi+pi-(1),2pi0pi+pi-(2),2pi+2pi-(3),ppbar(4),nnbar(5),
                    // K+K-(6),K0K0bar(7),pi+pi-pi0(8), Lamb Lambbar->pi-pi+ppbar(9) 
 int m_fsr;         // ISR only(0), ISR+FSR(1), ISR+INT+FSR(2)
 int m_fsrnlo;      // yes(1), no(0)
 int m_ivac;        // no(0), yes - Jegerlehner(1), yes - Teubner(2)
 int m_tagged;      // tagged photons(0), untagged photons(1)
 int m_NarrowRes;  // none(0), JPsi (1), Psip(2)
 int m_FF_Kaon;     // KaonFormFactor: constrained (0), unconstrained (1), Kuhn-Khodjamirian-Bruch (2) 
 int m_FF_Pion;     // KS Pionformfactor(0), GS Pionformfactor old(1), GS Pionformfactor new(2)
 int  m_f0_model;   // f0+f0(600): KK model(0), no structure(1), no f0+f0(600)(2), f0 KLOE(3)
 double m_E;        // CMS-energy                        
 double m_q2min;    // minimal  hadrons(muons)-gamma-inv mass squared     
 double m_q2_min_c; // minimal inv. mass squared of the hadrons(muons)
 double m_q2_max_c; // maximal inv. mass squared of the hadrons(muons)
 double m_gmin;     // minimal photon energy/missing energy             
 double m_phot1cut; // minimal photon angle/missing momentum angle
 double m_phot2cut; // maximal photon angle/missing momentum angle
 double m_pi1cut;   // minimal hadrons(muons) angle
 double m_pi2cut;   // maximal hadrons(muons) angle

 double qqmin,qqmax;
 double cos1min,cos1max,cos2min,cos2max,cos3min,cos3max;
 double dsigm1,dsigm2,sigma1,sigma2,sigma,dsigm,Ar[14],Ar_r[14];
 
 int ievent;

 // Initial Seed
 long int m_initSeed;
};

#endif

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