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#ifndef G4PomeronCrossSection_h
#define G4PomeronCrossSection_h 1
//
// $Id: G4PomeronCrossSection.hh,v 1.3 2006/06/29 20:55:19 gunter Exp $
// GEANT4 tag $Name: geant4-09-03-ref-09 $
//
#include "G4Proton.hh"
#include "G4Neutron.hh"

#include "G4PionPlus.hh"
#include "G4PionMinus.hh"
#include "G4PionZero.hh"

#include "G4KaonPlus.hh"
#include "G4KaonMinus.hh"
#include "G4KaonZero.hh"
#include "G4KaonZeroShort.hh"
#include "G4KaonZeroLong.hh"
#include "G4Gamma.hh"

class G4PomeronCrossSection
{

  public:
  	G4PomeronCrossSection(const G4ParticleDefinition * );
  	G4PomeronCrossSection(const G4Proton * );
  	G4PomeronCrossSection(const G4Neutron * );

  	G4PomeronCrossSection(const G4PionPlus * );
  	G4PomeronCrossSection(const G4PionMinus * );
  	G4PomeronCrossSection(const G4PionZero * );

  	G4PomeronCrossSection(const G4KaonPlus * );
  	G4PomeronCrossSection(const G4KaonMinus * );
  	G4PomeronCrossSection(const G4KaonZero * );
  	G4PomeronCrossSection(const G4KaonZeroLong * );
  	G4PomeronCrossSection(const G4KaonZeroShort * );

  	G4PomeronCrossSection(const G4Gamma * );

	~G4PomeronCrossSection();
//  					s = (center of mass energy)**2	
	G4double GetTotalCrossSection(const G4double s);
	G4double GetDiffractiveCrossSection(const G4double s);
	G4double GetElasticCrossSection(const G4double s);
	G4double GetInelasticCrossSection(const G4double s);

	G4double GetTotalProbability(const G4double s, 
				  const G4double impactsquare);
	G4double GetDiffractiveProbability(const G4double s,
					const G4double impactsquare);
	G4double GetNondiffractiveProbability(const G4double s,
					const G4double impactsquare);
	G4double GetElasticProbability(const G4double s,
				    const G4double impactsquare);

	G4double GetInelasticProbability(const G4double s, 
				      const G4double impactsquare);
				      
	G4double GetCutPomeronProbability(const G4double s,
			const G4double impactsquare, const G4int nPomerons);
	
	void Setgamma(const G4double agam); // temporary only! GF.
        G4double SoftEikonal(G4double s, G4double impactsquare);
        G4double HardEikonal(G4double s, G4double impactsquare);
        
        void Pomeron_S(G4double apomeron_S){ pomeron_S = apomeron_S;}
        void Pomeron_Gamma(G4double apomeron_Gamma){ pomeron_Gamma = apomeron_Gamma;}
        void Pomeron_C(G4double apomeron_C){ pomeron_C = apomeron_C;}
        void Pomeron_Rsquare(G4double apomeron_Rsquare){ pomeron_Rsquare = apomeron_Rsquare;}
        void Pomeron_Alpha(G4double apomeron_Alpha){ pomeron_Alpha = apomeron_Alpha;}
        void Pomeron_Alphaprime(G4double apomeron_Alphaprime){ pomeron_Alphaprime = apomeron_Alphaprime;}
        void Pomeron_Gamma_Hard(G4double apomeron_Gamma_Hard){ pomeron_Gamma_Hard = apomeron_Gamma_Hard;}
        void Pomeron_Alpha_Hard(G4double apomeron_Alpha_Hard){ pomeron_Alpha_Hard = apomeron_Alpha_Hard;}

  private: 
	G4double PowerSoft(const G4double s);
	G4double PowerHard(const G4double s);
	G4double LambdaSoft(const G4double s);
	G4double LambdaHard(const G4double s);
	G4double Zsoft(const G4double s);
	G4double Zhard(const G4double s);
  
	G4PomeronCrossSection();
        void InitForNucleon();
        void InitForPion();
        void InitForKaon();
        void InitForGamma();
	
	G4double Expand(G4double z);
	inline G4double Z(const G4double Scms);
	inline G4double SigP(const G4double Scms);
	inline G4double Power(const G4double Scms);
        inline G4double Lambda(const G4double s);
        inline G4double Eikonal(const G4double s,const G4double impactsquare);
        
        G4double pomeron_S;
	G4double pomeron_Gamma;
	G4double pomeron_C;
	G4double pomeron_Rsquare;
	G4double pomeron_Alpha;
	G4double pomeron_Alphaprime;
        G4double pomeron_Gamma_Hard;
        G4double pomeron_Alpha_Hard;
	

};
#endif
