LwlynSmithFF.h

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//____________________________________________________________________________
/*!

\class    genie::LwlynSmithFF

\brief    Abstract Base Class:
          implements the QELFormFactorsModelI interface but can not be
          instantiated.

          Its sole purpose of existence is to transmit common implementation
          (related to the Llewellyn-Smith model for QEL vN scattering) to its
          concrete subclasses: LwlynSmithFFCC, LwlynSmithFFNC.

\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 _LLEWELLYN_SMITH_FORM_FACTOR_MODEL_H_
#define _LLEWELLYN_SMITH_FORM_FACTOR_MODEL_H_

#include "Physics/QuasiElastic/XSection/QELFormFactorsModelI.h"
#include "Physics/QuasiElastic/XSection/ELFormFactors.h"
#include "Physics/QuasiElastic/XSection/AxialFormFactor.h"

namespace genie {

class ELFormFactorsModelI;
class AxialFormFactorModelI;

class LwlynSmithFF : public QELFormFactorsModelI {

public:

  virtual ~LwlynSmithFF();

  // QELFormFactorModelI interface implementation
  virtual double F1V     (const Interaction * interaction) const;
  virtual double xiF2V   (const Interaction * interaction) const;
  virtual double FA      (const Interaction * interaction) const;
  virtual double Fp      (const Interaction * interaction) const;

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

protected:

  LwlynSmithFF();
  LwlynSmithFF(string name);
  LwlynSmithFF(string name, string config);

  virtual void LoadConfig (void);

  virtual double tau    (const Interaction * interaction) const;
  virtual double GVE    (const Interaction * interaction) const;
  virtual double GVM    (const Interaction * interaction) const;

  virtual double F1P    (const Interaction * interaction) const;
  virtual double F2P    (const Interaction * interaction) const;
  virtual double F1N    (const Interaction * interaction) const;
  virtual double F2N    (const Interaction * interaction) const;

  virtual double StrangeF1V   (const Interaction * interaction) const;
  virtual double StrangexiF2V (const Interaction * interaction) const;
  virtual double StrangeFA    (const Interaction * interaction) const;

  const ELFormFactorsModelI   * fElFFModel;
  const AxialFormFactorModelI * fAxFFModel;

  mutable ELFormFactors   fELFF;
  mutable AxialFormFactor fAxFF;

  double fMuP;
  double fMuN;
  double fSin28w;
  double fFDratio;
  bool fCleanUpfElFFModel;
};

}       // genie namespace

#endif