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ShowerAlphaQED.h
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ShowerAlphaQED.h
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// -*- C++ -*-
#ifndef HERWIG_ShowerAlphaQED_H
#define HERWIG_ShowerAlphaQED_H
//
// This is the declaration of the ShowerAlphaQED class.
//
#include "ShowerAlpha.h"
#include "ShowerAlphaQED.fh"
namespace Herwig {
using namespace ThePEG;
/** \ingroup Shower
*
* This concrete class provides the definition of the
* pure virtual function value(scale) for \f$\alpha_{\rm QED}\f$.
*
* @see ShowerAlpha
* @see ShowerAlphaQCD
*
* @see \ref ShowerAlphaQEDInterfaces "The interfaces"
* defined for ShowerAlphaQED.
*/
class ShowerAlphaQED: public ShowerAlpha {
public:
/** @name Standard constructors and destructors. */
//@{
/**
* The default constructor.
*/
inline ShowerAlphaQED();
/**
* The copy constructor.
*/
inline ShowerAlphaQED(const ShowerAlphaQED &);
/**
* The destructor.
*/
virtual ~ShowerAlphaQED();
//@}
public:
/**
* Methods to return the coupling.
* The methods are equivalent to the QCD ones
* and are necessary to make use of the virtuality of ShowerAlpha
* at other places.
*/
//@{
/**
* It returns the running coupling value evaluated at the input scale
* multiplied by the scale factor scaleFactor().
* @param scale The scale
* @return The coupling
*/
virtual double value(const Energy2 scale);
/**
* It returns the running coupling value evaluated at the input scale
* multiplied by the scale factor scaleFactor().
*/
inline virtual double overestimateValue();
//@}
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);
//@}
/**
* 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();
protected:
/** @name Clone Methods. */
//@{
/**
* Make a simple clone of this object.
* @return a pointer to the new object.
*/
inline 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.
*/
inline virtual IBPtr fullclone() const;
//@}
protected:
/** @name Standard Interfaced functions. */
//@{
/**
* Check sanity of the object during the setup phase.
*/
inline virtual void doupdate() throw(UpdateException);
/**
* Initialize this object after the setup phase before saving an
* EventGenerator to disk.
* @throws InitException if object could not be initialized properly.
*/
inline virtual void doinit() throw(InitException);
/**
* Initialize this object. Called in the run phase just before
* a run begins.
*/
inline virtual void doinitrun();
/**
* Finalize this object. Called in the run phase just after a
* run has ended. Used eg. to write out statistics.
*/
inline virtual void dofinish();
/**
* Rebind pointer to other Interfaced objects. Called in the setup phase
* after all objects used in an EventGenerator has been cloned so that
* the pointers will refer to the cloned objects afterwards.
* @param trans a TranslationMap relating the original objects to
* their respective clones.
* @throws RebindException if no cloned object was found for a given
* pointer.
*/
inline virtual void rebind(const TranslationMap & trans)
throw(RebindException);
/**
* Return a vector of all pointers to Interfaced objects used in this
* object.
* @return a vector of pointers.
*/
inline virtual IVector getReferences();
//@}
private:
/**
* The static object used to initialize the description of this class.
* Indicates that this is a concrete class with persistent data.
*/
static ClassDescription<ShowerAlphaQED> initShowerAlphaQED;
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
ShowerAlphaQED & operator=(const ShowerAlphaQED &);
private:
/**
* The value of the coupling, as we are producing real photons
* this is always \f$\alpha(q^2=0)\f$.
*/
double _alpha;
};
}
#include "ThePEG/Utilities/ClassTraits.h"
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the
* base classes of ShowerAlphaQED. */
template <>
struct BaseClassTrait<Herwig::ShowerAlphaQED,1> {
/** Typedef of the first base class of ShowerAlphaQED. */
typedef Herwig::ShowerAlpha NthBase;
};
/** This template specialization informs ThePEG about the name of
* the ShowerAlphaQED class and the shared object where it is defined. */
template <>
struct ClassTraits<Herwig::ShowerAlphaQED>
: public ClassTraitsBase<Herwig::ShowerAlphaQED> {
/** Return a platform-independent class name */
static string className() { return "Herwig++::ShowerAlphaQED"; }
/** Return the name(s) of the shared library (or libraries) be loaded to get
* access to the ShowerAlphaQED class and any other class on which it depends
* (except the base class). */
static string library() { return "HwShower.so"; }
};
/** @endcond */
}
#include "ShowerAlphaQED.icc"
#ifndef ThePEG_TEMPLATES_IN_CC_FILE
// #include "ShowerAlphaQED.tcc"
#endif
#endif /* HERWIG_ShowerAlphaQED_H */

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