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//
//  Calculation of the total, elastic and inelastic cross-sections
//  of anti-nucleon and anti-nucleus interactions with nuclei 
//  based on Glauber approach,  V. Grishine formulaes for 
//  interpolations (ref. V.M.Grichine, Eur.Phys.J., C62(2009) 399;   
//  NIM, B267 (2009) 2460) and our parametrization of hadron-nucleon 
//  cross-sections 
// 
//
//   Created by A.Galoyan and V. Uzhinsky, 18.11.2010  


#ifndef G4ComponentAntiNuclNuclearXS_h
#define G4ComponentAntiNuclNuclearXS_h

#include <CLHEP/Units/PhysicalConstants.h>  // pi, fermi,..

#include "globals.hh"
#include "G4Proton.hh"
#include "G4AntiProton.hh"
#include "G4AntiNeutron.hh"
#include "G4AntiDeuteron.hh"
#include "G4AntiHe3.hh"
#include "G4AntiTriton.hh"
#include "G4AntiAlpha.hh"
#include "G4Nucleus.hh"

#include "G4VComponentCrossSection.hh"

class G4ParticleDefinition;

class G4ComponentAntiNuclNuclearXS : public G4VComponentCrossSection
{
public:

  G4ComponentAntiNuclNuclearXS ();
  virtual ~G4ComponentAntiNuclNuclearXS ();
   
virtual
  G4double GetTotalZandACrossSection(const G4ParticleDefinition* aParticle,
				     G4double kinEnergy,
				     G4int Z, G4int A);

virtual
  G4double ComputeTotalCrossSection(const G4ParticleDefinition* aParticle,
				    G4double kinEnergy, 
				    G4int Z, G4double A);

virtual
  G4double GetInelasticZandACrossSection(const G4ParticleDefinition* aParticle,
					 G4double kinEnergy, 
					 G4int Z, G4int A);

virtual
  G4double ComputeInelasticCrossSection(const G4ParticleDefinition* aParticle,
				      G4double kinEnergy, 
				      G4int Z, G4double A);

virtual
  G4double ComputeElasticCrossSection(const G4ParticleDefinition* aParticle,
				      G4double kinEnergy, 
				      G4int Z, G4double A);

virtual
  G4double GetElasticZandACrossSection(const G4ParticleDefinition* aParticle,
				       G4double kinEnergy, 
				       G4int Z, G4int A);
 
virtual
 void BuildPhysicsTable(const G4ParticleDefinition&)
 {}

virtual
 void DumpPhysicsTable(const G4ParticleDefinition&) 
 {}

// Method for calculation of Anti-Hadron Nucleon Total Cross-section
G4double GetAntiHadronNucleonTotCrSc(const G4ParticleDefinition* aParticle, G4double kinEnergy);


// Method for calculation of Anti-Hadron Nucleon Elastic Cross-section
G4double GetAntiHadronNucleonElCrSc(const G4ParticleDefinition* aParticle, G4double kinEnergy);


private:

  const G4double fUpperLimit;
  const G4double fLowerLimit; 
  G4double fRadiusEff;  // Effective Radius for AntiNucleus 
  G4double fRadiusNN2;  // Sqr of radius of NN collision

  G4double fTotalXsc, fElasticXsc, fInelasticXsc;
  G4double fAntiHadronNucleonTotXsc, fAntiHadronNucleonElXsc; 
  G4double Elab, S, SqrtS ;
  G4double Mn, b0, b2,  SqrtS0, S0, R0; //parameters for AntiHadron-Nucleon Xsc  
   
  G4ParticleDefinition* theAProton;
  G4ParticleDefinition* theANeutron;
  G4ParticleDefinition* theADeuteron;
  G4ParticleDefinition* theATriton;
  G4ParticleDefinition* theAAlpha;
  G4ParticleDefinition* theAHe3;

};

#endif