ReinSehgalRESXSec.h

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//____________________________________________________________________________
/*!

\class    genie::ReinSehgalRESXSec

\brief    Computes the cross section for an exclusive 1pi reaction through
          resonance neutrinoproduction according to the Rein-Sehgal model.

          This algorithm produces in principle what you could also get from
          the genie::RESXSec algorithm (RES cross section integrator) by
          specifying the genie::ReinSehgalRESPXSec as the differential
          cross section model. However, ReinSehgalRESXSec offers a faster
          alternative. Before computing any RES cross section this algorithm
          computes and caches splines for resonance neutrino-production cross
          sections. This improves the speed of the GENIE spline construction
          phase if splines for multiple nuclear targets are to be computed.

          Is a concrete implementation of the XSecAlgorithmI interface.\n

\ref      D.Rein and L.M.Sehgal, Neutrino Excitation of Baryon Resonances
          and Single Pion Production, Ann.Phys.133, 79 (1981)

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

\created  March 09, 2006

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

#ifndef _REIN_SEHGAL_RES_XSEC_H_
#define _REIN_SEHGAL_RES_XSEC_H_

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

namespace genie {

class ReinSehgalRESXSec : public ReinSehgalRESXSecWithCache {

public:
  ReinSehgalRESXSec();
  ReinSehgalRESXSec(string param_set);
  virtual ~ReinSehgalRESXSec();

  // XSecIntegratorI interface implementation
  double Integrate(const XSecAlgorithmI * model, 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);

  bool fUsePauliBlocking;      ///< account for Pauli blocking?
};

}       // genie namespace
#endif  // _REIN_SEHGAL_RES_XSEC_H_