P33PaschosLalakulichPXSec.h

Go to the documentation of this file.

//____________________________________________________________________________
/*!
 
\class    genie::P33PaschosLalakulichPXSec
 
\brief    Double differential resonance cross section for P33 according to the
          Paschos, Lalakulich model.
 
          Is a concrete implementation of the XSecAlgorithmI interface.
 
\ref      O.Lalakulich and E.A.Paschos, Resonance Production by Neutrinos:
          I. J=3/2 Resonances, hep-ph/0501109
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool
 
          based on code written by the model authors (Olga Lalakulich).
 
\created  February 22, 2005
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org
*/
//____________________________________________________________________________
 
#ifndef _P33_PASCHOS_LALAKULICH_PARTIAL_XSEC_H_
#define _P33_PASCHOS_LALAKULICH_PARTIAL_XSEC_H_
 
#include "Framework/EventGen/XSecAlgorithmI.h"
 
namespace genie {
 
class XSecIntegratorI;
 
class P33PaschosLalakulichPXSec : public XSecAlgorithmI {
 
public:
  P33PaschosLalakulichPXSec();
  P33PaschosLalakulichPXSec(string name);
  virtual ~P33PaschosLalakulichPXSec();
 
  // 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 Pauli   (double Q2, double W, double MN) const; ///< Pauli suppression for D2
  double Nu      (double Q2, double W, double MN) const; ///< kinematic variables
  double NuStar  (double Q2, double W, double MN) const; ///< ...
  double PPiStar (double W, double MN) const; ///< ...
 
  const XSecIntegratorI *   fXSecIntegrator;
 
  double fFermiConstant2 ;
  double fMa;
  double fMv;
  double fCos28c;
  
  bool   fTurnOnPauliCorrection;
};
 
}       // genie namespace
#endif  // _P33_PASCHOS_LALAKULICH_PARTIAL_XSEC_H_