HEDISPXSec.h

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//____________________________________________________________________________
/*!
 
\class    genie::HEDISPXSec
 
\brief    Computes the double differential Cross Section for HEDIS. \n
          Is a concrete implementation of the XSecAlgorithmI interface.
 
\author   Alfonso Garcia <alfonsog \at nikhef.nl>
          NIKHEF
 
\created  August 28, 2019
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org
          or see $GENIE/LICENSE
*/
//____________________________________________________________________________
 
#ifndef _HEDIS_PXSEC_H_
#define _HEDIS_PXSEC_H_
 
#include "Framework/EventGen/XSecAlgorithmI.h"
#include "Physics/HEDIS/XSection/HEDISStrucFunc.h"
 
namespace genie {
 
  class XSecIntegratorI;
 
  class HEDISPXSec : public XSecAlgorithmI {
 
    public:
      HEDISPXSec();
      HEDISPXSec(string config);
      virtual ~HEDISPXSec();
 
      // XSecAlgorithmI interface implementation
      double XSec            (const Interaction * i, KinePhaseSpace_t k) const;
      double Integral        (const Interaction * i) const;
      bool   ValidProcess    (const Interaction * i) 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);
      double ds_dxdy      (SF_xQ2 sf, double x, double y) const;
      double ds_dxdy_mass (SF_xQ2 sf, double x, double y, double e, double mt, double ml2) const;
 
      const XSecIntegratorI *        fXSecIntegrator;     ///< diff. xsec integrator
    
      double fWmin;            ///< Minimum value of W
      bool fMassTerms;         ///< Account for second order effects in DDxsec
      SF_info fSFinfo;         ///< Information used to computed SF
  };
 
}       // genie namespace
 
#endif  // _HEDIS_PXSEC_H_