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Herwig
7.2.1
Decay
Perturbative
SMHiggsGGHiggsPPDecayer.h
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// -*- C++ -*-
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//
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// SMHiggsGGHiggsPPDecayer.h is a part of Herwig - A multi-purpose Monte Carlo event generator
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// Copyright (C) 2002-2019 The Herwig Collaboration
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//
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// Herwig is licenced under version 3 of the GPL, see COPYING for details.
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// Please respect the MCnet academic guidelines, see GUIDELINES for details.
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//
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#ifndef HERWIG_SMHiggsGGHiggsPPDecayer_H
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#define HERWIG_SMHiggsGGHiggsPPDecayer_H
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//
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// This is the declaration of the SMHiggsGGHiggsPPDecayer class.
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//
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#include "Herwig/Decay/PerturbativeDecayer.h"
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#include "Herwig/Decay/DecayPhaseSpaceMode.h"
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#include "Herwig/Models/StandardModel/StandardModel.h"
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#include "ThePEG/Helicity/Vertex/AbstractVVSVertex.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
SMHiggsGGHiggsPPDecayer
:
public
PerturbativeDecayer
{
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public
:
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SMHiggsGGHiggsPPDecayer
() : _h0wgt(3,1.), _minloop(6), _maxloop(6), _massopt(0)
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{}
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virtual
double
me2(
const
int
ichan,
const
Particle
& part,
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const
ParticleVector
& decay,
MEOption
meopt)
const
;
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virtual
bool
accept(
tcPDPtr
parent,
const
tPDVector
& children)
const
;
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virtual
int
modeNumber
(
bool
&,
tcPDPtr
,
const
tPDVector
& )
const
{
return
-1;}
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virtual
ParticleVector
decay(
const
Particle
& parent,
const
tPDVector
& children)
const
;
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virtual
void
dataBaseOutput(ofstream & os,
bool
header)
const
;
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virtual
double
matrixElementRatio(
const
Particle
& inpart,
const
ParticleVector
& decay2,
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const
ParticleVector
& decay3,
MEOption
meopt,
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ShowerInteraction
inter);
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virtual
POWHEGType
hasPOWHEGCorrection
() {
return
FSR;}
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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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virtual
IBPtr
clone
()
const
{
return
new_ptr(*
this
);}
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virtual
IBPtr
fullclone
()
const
{
return
new_ptr(*
this
);}
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protected
:
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virtual
void
doinit();
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virtual
void
doinitrun();
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protected
:
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double
realME(
const
vector<cPDPtr> & partons,
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const
vector<Lorentz5Momentum> & momenta)
const
;
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Energy2 loME(Energy mh)
const
;
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private
:
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SMHiggsGGHiggsPPDecayer
& operator=(
const
SMHiggsGGHiggsPPDecayer
&) =
delete
;
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AbstractVVSVertexPtr
_hggvertex
;
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AbstractVVSVertexPtr
_hppvertex
;
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AbstractVVSVertexPtr
_hzpvertex
;
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vector<double>
_h0wgt
;
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mutable
RhoDMatrix
_rho
;
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mutable
ScalarWaveFunction
_swave
;
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mutable
vector<VectorWaveFunction> _vwave[2];
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private
:
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int
_minloop
;
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int
_maxloop
;
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unsigned
int
_massopt
;
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};
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}
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#endif
/* HERWIG_SMHiggsGGHiggsPPDecayer_H */
ThePEG::PersistentIStream
Herwig::SMHiggsGGHiggsPPDecayer::hasPOWHEGCorrection
virtual POWHEGType hasPOWHEGCorrection()
Has a POWHEG style correction.
Definition:
SMHiggsGGHiggsPPDecayer.h:92
ThePEG::Particle
ThePEG::Helicity
Herwig::SMHiggsGGHiggsPPDecayer::_maxloop
int _maxloop
Maximum flavour of quarks to include in the loops.
Definition:
SMHiggsGGHiggsPPDecayer.h:226
Herwig::ShowerInteraction
ShowerInteraction
Handy header file to be included in all Shower classes.
Definition:
ShowerInteraction.h:23
Herwig::SMHiggsGGHiggsPPDecayer::_h0wgt
vector< double > _h0wgt
Maximum weight for integration.
Definition:
SMHiggsGGHiggsPPDecayer.h:195
Herwig::SMHiggsGGHiggsPPDecayer::modeNumber
virtual int modeNumber(bool &, tcPDPtr, const tPDVector &) const
Which of the possible decays is required.
Definition:
SMHiggsGGHiggsPPDecayer.h:65
Herwig::SMHiggsGGHiggsPPDecayer::fullclone
virtual IBPtr fullclone() const
Make a clone of this object, possibly modifying the cloned object to make it sane.
Definition:
SMHiggsGGHiggsPPDecayer.h:135
ThePEG::PersistentOStream
ThePEG::IBPtr
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
Herwig::SMHiggsGGHiggsPPDecayer::_swave
ScalarWaveFunction _swave
Scalar wavefunction.
Definition:
SMHiggsGGHiggsPPDecayer.h:205
ThePEG
Herwig::SMHiggsGGHiggsPPDecayer::_massopt
unsigned int _massopt
Option for treatment of the fermion loops.
Definition:
SMHiggsGGHiggsPPDecayer.h:231
Herwig::DecayIntegrator::MEOption
MEOption
Enum for the matrix element option.
Definition:
DecayIntegrator.h:79
ThePEG::Helicity::ScalarWaveFunction
Herwig::SMHiggsGGHiggsPPDecayer::_hggvertex
AbstractVVSVertexPtr _hggvertex
Pointer to h->gluon,gluon vertex.
Definition:
SMHiggsGGHiggsPPDecayer.h:180
Herwig::SMHiggsGGHiggsPPDecayer::_hppvertex
AbstractVVSVertexPtr _hppvertex
Pointer to h->gamma,gamma vertex.
Definition:
SMHiggsGGHiggsPPDecayer.h:185
ThePEG::tPDVector
vector< tPDPtr > tPDVector
Herwig::HwDecayerBase::POWHEGType
POWHEGType
Virtual members to be overridden by inheriting classes which implement hard corrections.
Definition:
HwDecayerBase.h:76
ThePEG::tcPDPtr
ThePEG::Ptr< ParticleData >::transient_const_pointer tcPDPtr
Herwig::PerturbativeDecayer
The PerturbativeDecayer class is the base class for perturbative decays in Herwig and implements the ...
Definition:
PerturbativeDecayer.h:23
Herwig::SMHiggsGGHiggsPPDecayer::clone
virtual IBPtr clone() const
Make a simple clone of this object.
Definition:
SMHiggsGGHiggsPPDecayer.h:129
Herwig::SMHiggsGGHiggsPPDecayer::_minloop
int _minloop
Parameters for the real POWHEG correction.
Definition:
SMHiggsGGHiggsPPDecayer.h:221
Herwig::SMHiggsGGHiggsPPDecayer::_rho
RhoDMatrix _rho
Spin density matrix.
Definition:
SMHiggsGGHiggsPPDecayer.h:200
Herwig::SMHiggsGGHiggsPPDecayer::SMHiggsGGHiggsPPDecayer
SMHiggsGGHiggsPPDecayer()
The default constructor.
Definition:
SMHiggsGGHiggsPPDecayer.h:38
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
Herwig::SMHiggsGGHiggsPPDecayer
The SMHiggsGGHiggsPPDecayer class performs the of a Standard Model Higgs boson to: a pair of photons ...
Definition:
SMHiggsGGHiggsPPDecayer.h:31
ThePEG::ParticleVector
vector< PPtr > ParticleVector
ThePEG::RhoDMatrix
Herwig::SMHiggsGGHiggsPPDecayer::_hzpvertex
AbstractVVSVertexPtr _hzpvertex
Pointer to h->gamma,gamma vertex.
Definition:
SMHiggsGGHiggsPPDecayer.h:190
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