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// -*- C++ -*-
//
// MultiCutBase.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2011 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_MultiCutBase_H
#define THEPEG_MultiCutBase_H
//
// This is the declaration of the MultiCutBase class.
//
#include "ThePEG/Interface/Interfaced.h"
#include "MultiCutBase.fh"
#include "Cuts.fh"
namespace ThePEG {
/**
* This class corresponds to a kinematical cut to be made on a set of
* outgoing particles from a hard sub-process.
*
* There are three virtual functions to be overridden by concrete
* sub-classes. minS() and maxS() should return the minimum and
* maximum invariant mass of of a set of particle types. In addition
* the passCut() function should return true if a set of particle
* with a given types and given momenta will pass the cuts.
*
* @see \ref MultiCutBaseInterfaces "The interfaces"
* defined for MultiCutBase.
*/
class MultiCutBase: public Interfaced {
public:
/** @name Virtual functions to be overridden by sub-classes. */
//@{
/**
* Return the minimum allowed value of the squared invariant mass of
* a set of outgoing partons of the given types. Typically used to
* cut off the tails of the mass of a resonance for efficiency.
*/
virtual Energy2 minS(const tcPDVector & pv) const = 0;
/**
* Return the maximum allowed value of the squared invariant mass of
* a set of outgoing partons of the given types. Typically used to
* cut off the tails of the mass of a resonance for efficiency.
*/
virtual Energy2 maxS(const tcPDVector & pv) const = 0;
/**
* Return true if a set of outgoing particles with typea \a ptype
* and corresponding momenta \a p passes the cuts.
*/
virtual bool passCuts(tcCutsPtr parent, const tcPDVector & ptype,
const vector<LorentzMomentum> & p) const;
/**
* Return true if the given vector of particles passes the cuts.
*/
bool passCuts(tcCutsPtr parent, const tcPVector & p) const;
//@}
/**
* Describe the currently active cuts in the log file.
*/
virtual void describe() const;
public:
/**
* The standard Init function used to initialize the interfaces.
* Called exactly once for each class by the class description system
* before the main function starts or
* when this class is dynamically loaded.
*/
static void Init();
private:
/**
* The static object used to initialize the description of this class.
* Indicates that this is an abstract class without persistent data.
*/
static AbstractNoPIOClassDescription<MultiCutBase> initMultiCutBase;
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
MultiCutBase & operator=(const MultiCutBase &);
};
}
#include "ThePEG/Utilities/ClassTraits.h"
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the
* base classes of MultiCutBase. */
template <>
struct BaseClassTrait<MultiCutBase,1> {
/** Typedef of the first base class of MultiCutBase. */
typedef Interfaced NthBase;
};
/** This template specialization informs ThePEG about the name of
* the MultiCutBase class and the shared object where it is defined. */
template <>
struct ClassTraits<MultiCutBase>
: public ClassTraitsBase<MultiCutBase> {
/** Return a platform-independent class name */
static string className() { return "ThePEG::MultiCutBase"; }
};
/** @endcond */
}
#endif /* THEPEG_MultiCutBase_H */
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