LuminosityFunction.h

// -*- C++ -*-
//
// LuminosityFunction.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2019 Leif Lonnblad
//
// ThePEG is licenced under version 3 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 &) = delete;
 
};
 
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 */