/usr/include/ThePEG/PDT/OmegaPhi3PiDecayer.h is in libthepeg-dev 1.8.0-1.1.
This file is owned by root:root, with mode 0o644.
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//
// OmegaPhi3PiDecayer.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_OmegaPhi3PiDecayer_H
#define THEPEG_OmegaPhi3PiDecayer_H
// This is the declaration of the OmegaPhi3PiDecayer class.
#include "ThePEG/PDT/FlatDecayer.h"
namespace ThePEG {
/**
* The OmegaPhi3PiDecayer class inherits from performs FlatDecayer and
* will reweight the flat phase space suitable to describe the decay
* of a \f$\phi\f$ or an \f$\omega\f$ into \f$\pi^+\pi^-\pi^0\f$. It
* will in fact decay anything into \f$\pi^+\pi^-\pi^0\f$ assuming the
* same matrix element.
*
* @see \ref OmegaPhi3PiDecayerInterfaces "The interfaces"
* defined for OmegaPhi3PiDecayer.
* @see FlatDecayer
* @see ParticleData
*/
class OmegaPhi3PiDecayer: public FlatDecayer {
public:
/** @name Standard constructors and destructors. */
//@{
/**
* Default constructor.
*/
OmegaPhi3PiDecayer() : margin(150.0) {}
//@}
public:
/** @name Virtual functions required by the Decayer class.
*/
//@{
/**
* Check if this decayer can perfom the decay specified by the
* given decay mode.
* @param dm the DecayMode describing the decay.
* @return true if this decayer can handle the given mode, otherwise false.
*/
virtual bool accept(const DecayMode & dm) const;
/**
* Give a weight to a phase space point. To be overridden by
* subclasses. For a given decay mode, \a dm, decaying \a parent
* particle and decayproducts, \a children, distributed according to
* a flat distribution in phase space, return a weight (less or
* equal to unity) modifying the flat distribution to the desired
* one. Note that the chosen phase space point may be rejected, but
* the chosen decay channel will not. This means that the weight
* returned by this function does not influence the branching
* ratios.
*/
virtual double reweight(const DecayMode & dm, const Particle & parent,
const ParticleVector & children) const;
//@}
public:
/** @name Functions used by the persistent I/O system. */
//@{
/**
* Function used to write out object persistently.
* @param os the persistent output stream written to.
*/
void persistentOutput(PersistentOStream & os) const;
/**
* Function used to read in object persistently.
* @param is the persistent input stream read from.
* @param version the version number of the object when written.
*/
void persistentInput(PersistentIStream & is, int version);
//@}
/**
* Standard Init function used to initialize the interfaces.
*/
static void Init();
protected:
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:
/**
* Used to multiply the bare weight to get something below unity. In
* the Fortran pythia version it was set to 150 for unknown reasons.
*/
double margin;
private:
/**
* Describe a concrete class with persistent data.
*/
static ClassDescription<OmegaPhi3PiDecayer> initOmegaPhi3PiDecayer;
/**
* Private and non-existent assignment operator.
*/
OmegaPhi3PiDecayer & operator=(const OmegaPhi3PiDecayer &);
};
}
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the base classes
* of OmegaPhi3PiDecayer. */
template <>
struct BaseClassTrait<OmegaPhi3PiDecayer,1>: public ClassTraitsType {
/** Typedef of the first base class of OmegaPhi3PiDecayer. */
typedef FlatDecayer NthBase;
};
/** This template specialization informs ThePEG about the name of the
* OmegaPhi3PiDecayer class and the shared object where it is
* defined. */
template <>
struct ClassTraits<OmegaPhi3PiDecayer>
: public ClassTraitsBase<OmegaPhi3PiDecayer> {
/** Return a platform-independent class name */
static string className() { return "ThePEG::OmegaPhi3PiDecayer"; }
/** Return the name of the shared library be loaded to get access to
* the OmegaPhi3PiDecayer class and every other class it uses
* (except the base class). */
static string library() { return "OmegaPhi3PiDecayer.so"; }
};
/** @endcond */
}
#endif /* THEPEG_OmegaPhi3PiDecayer_H */
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