LuminosityFunction.h

// -*- C++ -*-
//
// LuminosityFunction.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_LuminosityFunction_H
#define ThePEG_LuminosityFunction_H
// This is the declaration of the LuminosityFunction class.

#include "ThePEG/Handlers/HandlerBase.h"
#include "ThePEG/Handlers/LastXCombInfo.h"
#include "ThePEG/Vectors/LorentzRotation.fh"
#include "ThePEG/Utilities/Interval.h"

namespace ThePEG {

class LuminosityFunction: public HandlerBase, public LastXCombInfo<> {

  friend class EventHandler;

public:

  LuminosityFunction(Energy a = 45.6*GeV, Energy b = 45.6*GeV);

  virtual bool canHandle(const cPDPair &) const;

  virtual Energy maximumCMEnergy() const;

  virtual LorentzRotation getBoost() const;

  virtual double Y() const;

  virtual int nDim(const cPDPair &) const;

  virtual double value(const cPDPair &, double l1, double l2) const;

  virtual pair<double,double>
  generateLL(const double * r, double & jacobian) const;

public:

  Energy beamEMaxA() const { return theBeamEMaxA; }

  Energy beamEMaxB() const { return theBeamEMaxB; }

protected:

  void beamEMaxA(Energy x) { theBeamEMaxA = x; }

  void beamEMaxB(Energy x) { theBeamEMaxB = x; }

public:

  void persistentOutput(PersistentOStream & os) const;

  void persistentInput(PersistentIStream & is, int version);

  static void Init();

  void select(tXCombPtr);

protected:

  virtual IBPtr clone() const;

  virtual IBPtr fullclone() const;

private:

  Energy theBeamEMaxA;

  Energy theBeamEMaxB;

private:

  static ClassDescription<LuminosityFunction> initLuminosityFunction;

  LuminosityFunction & operator=(const LuminosityFunction &);

};

template <>
struct BaseClassTrait<LuminosityFunction,1>: public ClassTraitsType {
  typedef HandlerBase NthBase;
};

template <>
struct ClassTraits<LuminosityFunction>:
    public ClassTraitsBase<LuminosityFunction> {
  static string className() { return "ThePEG::LuminosityFunction"; }
};

}

#endif /* ThePEG_LuminosityFunction_H */

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