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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 <!id>ShowerAlphaQED<!!id> class.
//
// CLASSDOC SUBSECTION Description:
//
// This concrete class provides the definition of the
// pure virtual function <!id>value(scale)<!!id>.
//
// CLASSDOC SUBSECTION See also:
//
// <a href="http:ShowerAlpha.html">ShowerAlpha.h</a>,
//
#include "ShowerAlpha.h"
namespace Herwig {
using namespace ThePEG;
class ShowerAlphaQED: public ShowerAlpha {
public:
inline ShowerAlphaQED();
inline ShowerAlphaQED(const ShowerAlphaQED &);
virtual ~ShowerAlphaQED();
// Standard ctors and dtor.
// the following two methods are equivalent to the QCD ones
// and are necessary to make use of the virtuality of ShowerAlpha
// at other places.
virtual double value(const Energy2 scale);
// It returns the running alpha value evaluated at the input scale
// multiplied by the scale factor <!id>scaleFactor()<!!id>.
inline virtual double overestimateValue();
// It returns the running alpha value evaluated at the input scale
// multiplied by the scale factor <!id>scaleFactor()<!!id>.
public:
static void Init();
// Standard Init function used to initialize the interfaces.
protected:
inline virtual IBPtr clone() const;
inline virtual IBPtr fullclone() const;
// Standard clone methods.
private:
static ClassDescription<ShowerAlphaQED> initShowerAlphaQED;
// Describe an concrete class with persistent data.
ShowerAlphaQED & operator=(const ShowerAlphaQED &);
// Private and non-existent assignment operator.
private:
double _alpha;
};
}
// CLASSDOC OFF
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> {
static string className() { return "/Herwig++/ShowerAlphaQED"; }
// Return the class name.
static string library() { return "libHwShower.so"; }
// 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).
};
}
#include "ShowerAlphaQED.icc"
#endif /* HERWIG_ShowerAlphaQCD_H */

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