BYStrucFunc.h

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//____________________________________________________________________________
/*!
 
\class    genie::BYStrucFunc
 
\brief    Bodek Yang structure function model
 
\ref      hep-ph/0411202
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool
 
\created  September 28, 2004
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org
*/
//____________________________________________________________________________
 
#ifndef _BODEK_YANG_STRUCTURE_FUNCTION_MODEL_H_
#define _BODEK_YANG_STRUCTURE_FUNCTION_MODEL_H_
 
#include "Physics/DeepInelastic/XSection/QPMDISStrucFuncBase.h"
#include "Framework/Interaction/Interaction.h"
#include "Physics/PartonDistributions/PDFModelI.h"
 
namespace genie {
 
class BYStrucFunc : public QPMDISStrucFuncBase {
 
public:
  BYStrucFunc();
  BYStrucFunc(string config);
  virtual ~BYStrucFunc();
 
  // overload Algorithm::Configure() to read the config. registry
  // at the algorithm initialization and set private data members
  void Configure (const Registry & config);
  void Configure (string param_set);
 
protected:
 
  void Init         (void);
  void ReadBYParams (void);
 
  // override part of the DISStructureFuncModel implementation
  // to compute all the corrections applied by the Bodek-Yang model.
  double ScalingVar (const Interaction * i) const;
  void   KFactors   (const Interaction * i, double & kuv,
                         double & kdv, double & kus, double & kds) const;
 
  // Bodek-Yang model-specific parameters
 
  double fA;     ///< better scaling var parameter A
  double fB;     ///< better scaling var parameter B
  double fCsU;   ///< U-sea K factor parameter
  double fCsD;   ///< D-sea K factor parameter
  double fCv1U;  ///< U-val K factor parameter
  double fCv2U;  ///< U-val K factor parameter
  double fCv1D;  ///< D-val K factor parameter
  double fCv2D;  ///< D-val K factor parameter
};
 
}         // genie namespace
 
#endif    // _BODEK_YANG_STRUCTURE_FUNCTION_MODEL_H_