/usr/include/ThePEG/PDF/NoRemnants.h is in libthepeg-dev 1.8.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// NoRemnants.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_NoRemnants_H
#define ThePEG_NoRemnants_H
// This is the declaration of the NoRemnants class.
#include "ThePEG/PDF/RemnantHandler.h"
// #include "NoRemnants.fh"
// #include "NoRemnants.xh"
namespace ThePEG {
/**
* NoRemnants inherits from RemnantHandler but can only handle
* particles without sub-structure with the parton density given by a
* NoPDF object and will never give any remnants.
*
*
* @see RemnantHandler
* @see NoPDF
*
*/
class NoRemnants: public RemnantHandler {
public:
/** @name Virtual functions mandated by the RemnantHandler base class. */
//@{
/**
* Return true if this remnant handler can handle extracting all
* specified partons. The NoRemnants will return false if any
* partons are given.
*/
virtual bool canHandle(tcPDPtr, const cPDVector & partons) const {
return partons.empty();
}
/**
* Generate Remnants. Will not generate remnants and will throw a
* RemnantHandlerException if the extracted parton is not the
* incomining particle with x=1.
*/
virtual Lorentz5Momentum generate(PartonBinInstance & pb, const double * r,
Energy2 scale,
const LorentzMomentum & p,
bool fixedPartonMomentum = false) const;
/**
* Generate the momentum of the extracted parton with the \a parent
* momentum given by the last argument. If the \a scale is negative,
* it means that the doScale in the previous call to nDim() was
* true, otherwise the given \a scale should be the virtuality of
* the extracted parton. \a shat is the total invariant mass squared
* of the hard sub-system produced by the extracted parton and the
* primary parton entering from the other side. Generated quantities
* which are not returned in the momentum may be saved in the
* PartonBinInstance, \a pb, for later use. In particular, if the
* nDim() random numbers, \a r, are not enough to generate with
* weight one, the resulting weight should be stored with the
* remnantWeight() method of the parton bin.
*/
virtual Lorentz5Momentum generate(PartonBinInstance & pb, const double * r,
Energy2 scale, Energy2 shat,
const LorentzMomentum & parent,
bool fixedPartonMomentum = false) const;
//@}
public:
/**
* Standard Init function used to initialize the interface.
*/
static void Init();
protected:
/** @name Clone Methods. */
//@{
/**
* Make a simple clone of this object.
* @return a pointer to the new object.
*/
virtual IBPtr clone() const;
/** Make a clone of this object, possibly modifying the cloned object
* to make it sane.
* @return a pointer to the new object.
*/
virtual IBPtr fullclone() const;
//@}
private:
/**
* Describe a concrete class without persistent data.
*/
static NoPIOClassDescription<NoRemnants> initNoRemnants;
/**
* Private and non-existent assignment operator.
*/
NoRemnants & operator=(const NoRemnants &);
};
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the
* base classes of NoRemnants. */
template <>
struct BaseClassTrait<NoRemnants,1>: public ClassTraitsType {
/** Typedef of the first base class of NoRemnants. */
typedef RemnantHandler NthBase;
};
/** This template specialization informs ThePEG about the name of the
* NoRemnants class. */
template <>
struct ClassTraits<NoRemnants>: public ClassTraitsBase<NoRemnants> {
/** Return a platform-independent class name */
static string className() { return "ThePEG::NoRemnants"; }
};
/** @endcond */
}
#endif /* ThePEG_NoRemnants_H */
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