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// $Id: G4NuMuNucleusCcModel.hh 90228 2015-05-21 08:49:57Z gcosmo $
//
// Geant4 Header : G4NuMuNucleusCcModel
//
// Author : V.Grichine 12.2.19
//  
// Modified:
//
// Class Description
// Default model for muon neutrino-nucleus charge current scattering; 
// Class Description - End

#ifndef G4NuMuNucleusCcModel_h
#define G4NuMuNucleusCcModel_h 1
 
#include "globals.hh"
#include "G4NeutrinoNucleusModel.hh"
#include "G4HadProjectile.hh"
#include "G4Nucleus.hh"
#include "G4NucleiProperties.hh"
#include "G4LorentzVector.hh"
#include "G4Threading.hh"

class G4ParticleDefinition;
class G4PreCompoundModel;
class G4Nucleus;
class G4Fragment;

class G4NuMuNucleusCcModel : public G4NeutrinoNucleusModel      // G4HadronicInteraction
{
public:

  G4NuMuNucleusCcModel(const G4String& name = "NuMuNuclCcModel");

  virtual ~G4NuMuNucleusCcModel();

  virtual void InitialiseModel();

  virtual G4bool IsApplicable(const G4HadProjectile & aTrack, 
  			      G4Nucleus & targetNucleus);

  virtual G4HadFinalState * ApplyYourself(const G4HadProjectile & aTrack, 
					  G4Nucleus & targetNucleus);


  ////////// KR excitation kinematics ////////////////////

  void SampleLVkr(const G4HadProjectile & aTrack, G4Nucleus & targetNucleus);

  G4double GetMinNuMuEnergy(){ return fMu + 0.5*fMu*fMu/fM1 + 4.*CLHEP::MeV; }; // kinematics + accuracy for sqrts
  
  G4double ThresholdEnergy(G4double mI, G4double mF, G4double mP) // for cluster decay
  { 
    G4double w = std::sqrt(fW2);
    return w + 0.5*( (mP+mF)*(mP+mF)-(w+mI)*(w+mI) )/mI;
  };
 
  virtual void ModelDescription(std::ostream&) const;

private:

  G4bool fData, fMaster; // for one initialisation only

#ifdef G4MULTITHREADED
  static G4Mutex numuNucleusModel;
#endif
  
};



#endif
