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Herwig
7.2.1
Decay
General
TFFDecayer.h
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// -*- C++ -*-
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//
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// TFFDecayer.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_TFFDecayer_H
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#define HERWIG_TFFDecayer_H
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//
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// This is the declaration of the TFFDecayer class.
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//
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#include "GeneralTwoBodyDecayer.h"
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#include "ThePEG/Repository/EventGenerator.h"
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#include "ThePEG/Helicity/Vertex/Tensor/FFTVertex.h"
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#include "ThePEG/Helicity/Vertex/Vector/FFVVertex.h"
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#include "ThePEG/Helicity/Vertex/Tensor/FFVTVertex.h"
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namespace
Herwig
{
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using namespace
ThePEG
;
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using
Helicity::FFTVertexPtr;
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class
TFFDecayer
:
public
GeneralTwoBodyDecayer
{
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public
:
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TFFDecayer
() {}
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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
Energy partialWidth(
PMPair
inpart,
PMPair
outa,
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PMPair
outb)
const
;
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virtual
POWHEGType
hasPOWHEGCorrection
() {
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POWHEGType
output = FSR;
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for
(
auto
vertex : vertex_) {
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if
(vertex->orderInAllCouplings()!=1) {
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output = No;
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break
;
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}
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}
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return
output;
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}
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virtual
double
threeBodyME(
const
int
,
const
Particle
& inpart,
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const
ParticleVector
& decay,
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ShowerInteraction
inter,
MEOption
meopt);
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virtual
void
setDecayInfo(
PDPtr
incoming
,
PDPair
outgoing
,
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vector<VertexBasePtr>,
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map<ShowerInteraction,VertexBasePtr> &,
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const
vector<map<ShowerInteraction,VertexBasePtr> > &,
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map<ShowerInteraction,VertexBasePtr>);
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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
;
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virtual
IBPtr
fullclone()
const
;
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private
:
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TFFDecayer
& operator=(
const
TFFDecayer
&) =
delete
;
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private
:
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vector<AbstractFFTVertexPtr>
vertex_
;
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vector<FFTVertexPtr>
perturbativeVertex_
;
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map<ShowerInteraction,AbstractFFVVertexPtr>
outgoingVertex1_
;
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map<ShowerInteraction,AbstractFFVVertexPtr>
outgoingVertex2_
;
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map<ShowerInteraction,AbstractFFVTVertexPtr>
fourPointVertex_
;
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mutable
RhoDMatrix
rho_
;
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mutable
vector<TensorWaveFunction>
tensors_
;
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mutable
vector<SpinorWaveFunction>
wave_
;
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mutable
vector<SpinorBarWaveFunction>
wavebar_
;
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mutable
RhoDMatrix
rho3_
;
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mutable
vector<TensorWaveFunction>
tensors3_
;
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mutable
vector<SpinorWaveFunction>
wave3_
;
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mutable
vector<SpinorBarWaveFunction>
wavebar3_
;
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mutable
vector<VectorWaveFunction>
gluon_
;
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};
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}
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#endif
/* HERWIG_TFFDecayer_H */
ThePEG::PersistentIStream
Herwig::TFFDecayer::tensors3_
vector< TensorWaveFunction > tensors3_
Tensor wavefunction for 3 body decay.
Definition:
TFFDecayer.h:202
ThePEG::Particle
Herwig::TFFDecayer
The TFFDecayer class implements the decay of a tensor to 2 fermions in a general model.
Definition:
TFFDecayer.h:34
Herwig::ShowerInteraction
ShowerInteraction
Handy header file to be included in all Shower classes.
Definition:
ShowerInteraction.h:23
Herwig::TFFDecayer::outgoingVertex1_
map< ShowerInteraction, AbstractFFVVertexPtr > outgoingVertex1_
Abstract pointer to AbstractFFVVertex for QCD radiation from outgoing (anti)fermion.
Definition:
TFFDecayer.h:162
Herwig::TFFDecayer::perturbativeVertex_
vector< FFTVertexPtr > perturbativeVertex_
Pointer to the perturbative vertex.
Definition:
TFFDecayer.h:157
Herwig::TFFDecayer::fourPointVertex_
map< ShowerInteraction, AbstractFFVTVertexPtr > fourPointVertex_
Abstract pointer to AbstractFFVTVertex for QCD radiation from 4 point vertex.
Definition:
TFFDecayer.h:172
ThePEG::PersistentOStream
ThePEG::IBPtr
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
ThePEG::Helicity::incoming
incoming
Herwig::GeneralTwoBodyDecayer
The GeneralTwoBodyDecayer class is designed to be the base class for 2 body decays for some general m...
Definition:
GeneralTwoBodyDecayer.h:38
Herwig::TFFDecayer::hasPOWHEGCorrection
virtual POWHEGType hasPOWHEGCorrection()
Has a POWHEG style correction.
Definition:
TFFDecayer.h:68
Herwig::TFFDecayer::TFFDecayer
TFFDecayer()
The default constructor.
Definition:
TFFDecayer.h:41
ThePEG
Herwig::GeneralTwoBodyDecayer::PMPair
pair< tcPDPtr, Energy > PMPair
A ParticleData ptr and (possible) mass pair.
Definition:
GeneralTwoBodyDecayer.h:43
ThePEG::Helicity::outgoing
outgoing
Herwig::TFFDecayer::wavebar_
vector< SpinorBarWaveFunction > wavebar_
Barred spinors for the decay products.
Definition:
TFFDecayer.h:192
Herwig::DecayIntegrator::MEOption
MEOption
Enum for the matrix element option.
Definition:
DecayIntegrator.h:79
Herwig::TFFDecayer::gluon_
vector< VectorWaveFunction > gluon_
Vector wavefunction for 3 body decay.
Definition:
TFFDecayer.h:217
Herwig::TFFDecayer::rho3_
RhoDMatrix rho3_
Spin density matrix for 3 body decay.
Definition:
TFFDecayer.h:197
Herwig::TFFDecayer::rho_
RhoDMatrix rho_
Spin density matrix.
Definition:
TFFDecayer.h:177
Herwig::HwDecayerBase::POWHEGType
POWHEGType
Virtual members to be overridden by inheriting classes which implement hard corrections.
Definition:
HwDecayerBase.h:76
Herwig::TFFDecayer::outgoingVertex2_
map< ShowerInteraction, AbstractFFVVertexPtr > outgoingVertex2_
Abstract pointer to AbstractFFVVertex for QCD radiation from outgoing (anti)fermion.
Definition:
TFFDecayer.h:167
ThePEG::PDPair
pair< PDPtr, PDPtr > PDPair
ThePEG::PDPtr
ThePEG::Ptr< ParticleData >::pointer PDPtr
Herwig::TFFDecayer::wave3_
vector< SpinorWaveFunction > wave3_
Spinor wavefunction for 3 body decay.
Definition:
TFFDecayer.h:207
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
Herwig::TFFDecayer::tensors_
vector< TensorWaveFunction > tensors_
Polarization tensors for the decaying particle.
Definition:
TFFDecayer.h:182
Herwig::TFFDecayer::vertex_
vector< AbstractFFTVertexPtr > vertex_
Abstract pointer to AbstractFFTVertex.
Definition:
TFFDecayer.h:152
ThePEG::ParticleVector
vector< PPtr > ParticleVector
ThePEG::RhoDMatrix
Herwig::TFFDecayer::wave_
vector< SpinorWaveFunction > wave_
Spinors for the decay products.
Definition:
TFFDecayer.h:187
Herwig::TFFDecayer::wavebar3_
vector< SpinorBarWaveFunction > wavebar3_
Barred spinor wavefunction for 3 body decay.
Definition:
TFFDecayer.h:212
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