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ForwardEvolver.h
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ForwardEvolver.h
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// -*- C++ -*-
#ifndef HERWIG_ForwardEvolver_H
#define HERWIG_ForwardEvolver_H
//
// This is the declaration of the ForwardEvolver class.
#include "ThePEG/Handlers/HandlerBase.h"
#include "ShowerConfig.h"
#include "Herwig++/Utilities/GlobalParameters.h"
#include "SplittingGenerator.h"
namespace Herwig {
using namespace ThePEG;
/** \ingroup Shower
*
* This class is responsible for the forward evolution of a time-like particles
* (and recursively to all their radiation products).
* It also treats the special case of the showering of a time-like
* decaying particle, in which the emissions have reversed angular ordering.
*
* @see SplittingGenerator
*/
class ForwardEvolver: public ThePEG::HandlerBase {
public:
/**
* Standard ctors and dtor.
*/
inline ForwardEvolver();
inline ForwardEvolver(const ForwardEvolver &);
virtual ~ForwardEvolver();
/**
* It does the forward evolution of the time-like input particle
* (and recursively for all its radiation products).
* accepting only emissions which conforms to the showerVariables
* and soft matrix element correction pointed by meCorrectionPtr.
* In the case that specialDecay is true then the forward evolution
* is done with reverse angular ordering, as it should be for radiation
* emitted by a decaying particle.
* If at least one emission has occurred then the method returns true
* and all the new created ShowerParticle objects (but not the input
* particle) are added to the collection collecShoPar (which can
* contain, at the beginning of the method, either the full collection
* of ShowerParticle already created so far by the showering,
* or being empty: the choice is up to the caller).
*/
bool timeLikeShower( tEHPtr ch,
const tShowerVarsPtr showerVariables,
//const tMECorrectionPtr meCorrectionPtr,
tShowerParticlePtr particle,
ShowerParticleVector & collecShoPar,
const bool specialDecay = false ) throw (Veto, Stop, Exception);
private:
bool MEVeto(tcPPtr, const Energy &, const double &);
public:
/**
* Standard functions for writing and reading from persistent streams.
*/
void persistentOutput(PersistentOStream &) const;
void persistentInput(PersistentIStream &, int);
/**
* Standard Init function used to initialize the interfaces.
*/
static void Init();
protected:
/**
* Standard clone methods.
*/
inline virtual IBPtr clone() const;
inline virtual IBPtr fullclone() const;
protected:
/**
* Standard Interfaced virtual functions.
*/
inline virtual void doupdate() throw(UpdateException);
inline virtual void doinit() throw(InitException);
inline virtual void dofinish();
/**
* Change all pointers to Interfaced objects to corresponding clones.
*/
inline virtual void rebind(const TranslationMap & trans)
throw(RebindException);
/**
* Return pointers to all Interfaced objects refered to by this.
*/
inline virtual IVector getReferences();
private:
/**
* Describe a concrete class with persistent data.
*/
static ClassDescription<ForwardEvolver> initForwardEvolver;
/**
* Private and non-existent assignment operator.
*/
ForwardEvolver & operator=(const ForwardEvolver &);
Ptr<SplittingGenerator>::pointer _splittingGenerator;
};
}
namespace ThePEG {
/**
* The following template specialization informs ThePEG about the
* base class of ForwardEvolver.
*/
template <>
struct BaseClassTrait<Herwig::ForwardEvolver,1> {
typedef ThePEG::HandlerBase NthBase;
};
/**
* The following template specialization informs ThePEG about the
* name of this class and the shared object where it is defined.
*/
template <>
struct ClassTraits<Herwig::ForwardEvolver>:
public ClassTraitsBase<Herwig::ForwardEvolver> {
/**
* Return the class name.
*/
static string className() { return "/Herwig++/ForwardEvolver"; }
/**
* Return the name of the shared library to be loaded to get
* access to this class and every other class it uses
* (except the base class).
*/
static string library() { return "HwShower.so"; }
};
}
#include "ForwardEvolver.icc"
#endif /* HERWIG_ForwardEvolver_H */

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