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Herwig
7.2.1
MatrixElement
Gamma
MEGammaGamma2WW.h
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// -*- C++ -*-
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#ifndef HERWIG_MEGammaGamma2WW_H
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#define HERWIG_MEGammaGamma2WW_H
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//
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// This is the declaration of the MEGammaGamma2WW class.
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//
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#include "Herwig/MatrixElement/HwMEBase.h"
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#include "ThePEG/Helicity/WaveFunction/VectorWaveFunction.h"
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#include "ThePEG/Helicity/Vertex/AbstractVVVVertex.fh"
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#include "ThePEG/Helicity/Vertex/AbstractVVVVVertex.fh"
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#include "Herwig/MatrixElement/ProductionMatrixElement.h"
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namespace
Herwig
{
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using namespace
ThePEG
;
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using namespace
ThePEG::Helicity
;
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class
MEGammaGamma2WW
:
public
HwMEBase
{
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public
:
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MEGammaGamma2WW
();
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virtual
unsigned
int
orderInAlphaS()
const
;
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virtual
unsigned
int
orderInAlphaEW()
const
;
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virtual
double
me2()
const
;
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virtual
Energy2 scale()
const
;
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virtual
void
getDiagrams()
const
;
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virtual
Selector<DiagramIndex>
diagrams(
const
DiagramVector
& dv)
const
;
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virtual
Selector<const ColourLines *>
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colourGeometries(tcDiagPtr diag)
const
;
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virtual
void
constructVertex(
tSubProPtr
);
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public
:
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void
persistentOutput(
PersistentOStream
& os)
const
;
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void
persistentInput(
PersistentIStream
& is,
int
version);
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static
void
Init();
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protected
:
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double
helicityME(vector<VectorWaveFunction> & p1,
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vector<VectorWaveFunction> & p2,
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vector<VectorWaveFunction> & w1,
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vector<VectorWaveFunction> & w2,
bool
calc)
const
;
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protected
:
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virtual
IBPtr
clone()
const
;
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virtual
IBPtr
fullclone()
const
;
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protected
:
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virtual
void
doinit();
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private
:
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MEGammaGamma2WW
& operator=(
const
MEGammaGamma2WW
&) =
delete
;
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private
:
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unsigned
int
massOption_
;
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AbstractVVVVertexPtr
WWWVertex_
;
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AbstractVVVVVertexPtr
WWWWVertex_
;
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mutable
ProductionMatrixElement
me_
;
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};
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}
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#endif
/* HERWIG_MEGammaGamma2WW_H */
ThePEG::PersistentIStream
ThePEG::Helicity
ThePEG::PersistentOStream
ThePEG::IBPtr
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
Herwig::MEGammaGamma2WW::massOption_
unsigned int massOption_
Treatment of the the W mass.
Definition:
MEGammaGamma2WW.h:176
ThePEG
Herwig::MEGammaGamma2WW
The MEGammaGamma2WW class provides the matrix elements for .
Definition:
MEGammaGamma2WW.h:25
Herwig::ProductionMatrixElement
The storage of the helicity amplitude expression for the matrix element of a hard process...
Definition:
ProductionMatrixElement.h:34
ThePEG::tSubProPtr
ThePEG::Ptr< SubProcess >::transient_pointer tSubProPtr
Herwig::MEGammaGamma2WW::WWWVertex_
AbstractVVVVertexPtr WWWVertex_
Pointer to the gammaWW vertex.
Definition:
MEGammaGamma2WW.h:181
Herwig::MEGammaGamma2WW::WWWWVertex_
AbstractVVVVVertexPtr WWWWVertex_
Pointer to the gammagammaWW vertex.
Definition:
MEGammaGamma2WW.h:186
ThePEG::Selector
Herwig::MEGammaGamma2WW::me_
ProductionMatrixElement me_
Matrix element.
Definition:
MEGammaGamma2WW.h:191
ThePEG::MEBase::DiagramVector
vector< DiagPtr > DiagramVector
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
Herwig::HwMEBase
The HwMEBase class serves a number of purposes.
Definition:
HwMEBase.h:35
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