RSHelicityAmplModelNCn.h

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//____________________________________________________________________________
/*!

\class    genie::RSHelicityAmplModelNCn

\brief    The Helicity Amplitudes, for all baryon resonances, for NC neutrino
          interactions on free neutrons, as computed in the Rein-Sehgal's paper.

          Concrete implementation of the RSHelicityAmplModelI interface.

\author   Costas Andreopoulos <constantinos.andreopoulos \at cern.ch>
          University of Liverpool & STFC Rutherford Appleton Laboratory

\created  May 03, 2004

\cpright  Copyright (c) 2003-2020, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org          
*/
//____________________________________________________________________________

#ifndef _HELICITY_AMPL_MODEL_NC_N_H_
#define _HELICITY_AMPL_MODEL_NC_N_H_

#include "Physics/Resonance/XSection/RSHelicityAmplModelI.h"

namespace genie {

class RSHelicityAmplModelNCn : public RSHelicityAmplModelI {

public:
  RSHelicityAmplModelNCn();
  RSHelicityAmplModelNCn(string config);
  virtual ~RSHelicityAmplModelNCn();

  // RSHelicityAmplModelI interface implementation
  const RSHelicityAmpl & Compute(Resonance_t res, const FKR & fkr) const;

  // overload the Algorithm::Configure() methods to load private data
  // members from configuration options
  void Configure(const Registry & config);
  void Configure(string config);

private:
  void LoadConfig(void);

  mutable RSHelicityAmpl fAmpl;
  double fSin28w;
};

}        // genie namespace
#endif   // _HELICITY_AMPL_MODEL_NC_N_H_