ReinDFRPXSec.h

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//____________________________________________________________________________
/*!
 
\class    genie::ReinDFRPXSec
 
\brief    Neutrino diffractive pion production cross section.
 
\ref      D.Rein, Nucl.Phys.B278(1986) 61-77
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool
 
\created  Feb 17th, 2009
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org
          
*/
//____________________________________________________________________________
 
#ifndef _REIN_DFRC_PXSEC_H_
#define _REIN_DFRC_PXSEC_H_
 
#include <string>
 
#include "Framework/EventGen/XSecAlgorithmI.h"
 
namespace genie {
 
class XSecIntegratorI;
 
class ReinDFRPXSec : public XSecAlgorithmI {
 
public:
  ReinDFRPXSec();
  ReinDFRPXSec(const std::string & config);
  virtual ~ReinDFRPXSec();
 
  // 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 fMa;      ///< axial mass
  double fBeta;    ///< b in dsig{piN}/dt = dsig0{piN}/dt * exp(-b(t-tmin)), b ~ 0.333 (nucleon_size)^2
 
  const XSecIntegratorI * fXSecIntegrator;
};
 
}       // genie namespace
#endif  // _REIN_DFRC_PXSEC_H_