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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"
namespace Herwig {
using namespace ThePEG;
/** \ingroup Shower
*
* This concrete class provides the definition of the
* pure virtual function value(scale).
*
* @see ShowerAlpha
*/
class ShowerAlphaQED: public ShowerAlpha {
public:
/**
* Standard ctors and dtor.
*/
inline ShowerAlphaQED();
inline ShowerAlphaQED(const ShowerAlphaQED &);
virtual ~ShowerAlphaQED();
/**
* The following two 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 alpha value evaluated at the input scale
* multiplied by the scale factor scaleFactor().
*/
virtual double value(const Energy2 scale);
/**
* It returns the running alpha value evaluated at the input scale
* multiplied by the scale factor scaleFactor().
*/
inline virtual double overestimateValue();
public:
/**
* 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;
private:
/**
* Describe an concrete class with persistent data.
*/
static ClassDescription<ShowerAlphaQED> initShowerAlphaQED;
/**
* Private and non-existent assignment operator.
*/
ShowerAlphaQED & operator=(const ShowerAlphaQED &);
private:
double _alpha;
};
}
namespace ThePEG {
/**
* The following template specialization informs ThePEG about the
* base class of ShowerAlphaQED.
*/
template <>
struct BaseClassTrait<Herwig::ShowerAlphaQED,1> {
typedef Herwig::ShowerAlpha 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::ShowerAlphaQED>:
public ClassTraitsBase<Herwig::ShowerAlphaQED> {
/**
* Return the class name.
*/
static string className() { return "/Herwig++/ShowerAlphaQED"; }
/**
* 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 "libHwShower.so"; }
};
}
#include "ShowerAlphaQED.icc"
#endif /* HERWIG_ShowerAlphaQCD_H */

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