PDFBase.h

// -*- C++ -*-
//
// PDFBase.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2007 Leif Lonnblad
//
// ThePEG is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef ThePEG_PDFBase_H
#define ThePEG_PDFBase_H
// This is the declaration of the PDFBase class.

#include "ThePEG/Config/ThePEG.h"
#include "ThePEG/Handlers/HandlerBase.h"
#include "ThePEG/PDF/PDFCuts.h"
#include "PDFBase.xh"

namespace ThePEG {

class PDFBase: public HandlerBase {

public:

  PDFBase();

  PDFBase(const PDFBase &);

  virtual ~PDFBase();

public:

  virtual bool canHandleParticle(tcPDPtr particle) const = 0;

  virtual bool canHandle(tcPDPtr particle) const;

  virtual bool hasPoleIn1(tcPDPtr particle, tcPDPtr parton) const;

  virtual cPDVector partons(tcPDPtr particle) const = 0;

  virtual double xfl(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                     double l, Energy2 particleScale = ZERO) const;

  virtual double xfx(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                     double x, double eps = 0.0,
                     Energy2 particleScale = ZERO) const;

  virtual double xfvl(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                     double l, Energy2 particleScale = ZERO) const;

  virtual double xfvx(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                      double x, double eps = 0.0,
                      Energy2 particleScale = ZERO) const;

  virtual double xfsl(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                      double l, Energy2 particleScale = ZERO) const;

  virtual double xfsx(tcPDPtr particle, tcPDPtr parton, Energy2 partonScale,
                      double x, double eps = 0.0,
                      Energy2 particleScale = ZERO) const;

  virtual double flattenL(tcPDPtr particle, tcPDPtr parton, const PDFCuts &cut,
                          double z, double & jacobian) const;

  virtual double flattenScale(tcPDPtr particle, tcPDPtr parton,
                               const PDFCuts & cut, double l, double z,
                               double & jacobian) const;

  tcRemHPtr remnantHandler() const { return theRemnantHandler; }


public:

  void persistentOutput(PersistentOStream & os) const;

  void persistentInput(PersistentIStream & is, int version);

  static void Init();

protected:

  virtual void doinit();

protected:

  RemHPtr theRemnantHandler;

protected:

  enum RangeException {
    rangeFreeze, 
    rangeZero,   
    rangeThrow   
  };

  RangeException rangeException;

private:


  static AbstractClassDescription<PDFBase> initPDFBase;

  PDFBase & operator=(const PDFBase &);

};

ThePEG_DECLARE_CLASS_TRAITS(PDFBase,HandlerBase);

}

#endif /* ThePEG_PDFBase_H */

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