herwig
is hosted by
Hepforge
,
IPPP Durham
Herwig
7.2.1
Decay
General
TVVDecayer.h
1
// -*- C++ -*-
2
//
3
// TVVDecayer.h is a part of Herwig - A multi-purpose Monte Carlo event generator
4
// Copyright (C) 2002-2019 The Herwig Collaboration
5
//
6
// Herwig is licenced under version 3 of the GPL, see COPYING for details.
7
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
8
//
9
#ifndef HERWIG_TVVDecayer_H
10
#define HERWIG_TVVDecayer_H
11
//
12
// This is the declaration of the TVVDecayer class.
13
//
14
15
#include "GeneralTwoBodyDecayer.h"
16
#include "ThePEG/Repository/EventGenerator.h"
17
#include "ThePEG/Helicity/Vertex/Vector/VVVVertex.h"
18
#include "ThePEG/Helicity/Vertex/Tensor/VVTVertex.h"
19
#include "ThePEG/Helicity/Vertex/Tensor/VVVTVertex.h"
20
21
namespace
Herwig
{
22
using namespace
ThePEG
;
23
using
Helicity::VVTVertexPtr;
24
34
class
TVVDecayer
:
public
GeneralTwoBodyDecayer
{
35
36
public
:
37
41
TVVDecayer
() {}
42
53
virtual
double
me2(
const
int
ichan,
const
Particle
& part,
54
const
ParticleVector
& decay,
MEOption
meopt)
const
;
55
62
virtual
Energy partialWidth(
PMPair
inpart,
PMPair
outa,
63
PMPair
outb)
const
;
67
virtual
POWHEGType
hasPOWHEGCorrection
() {
68
POWHEGType
output = FSR;
69
for
(
auto
vertex : vertex_) {
70
if
(vertex->orderInAllCouplings()!=1) {
71
output = No;
72
break
;
73
}
74
}
75
return
output;
76
}
77
81
virtual
double
threeBodyME(
const
int
,
const
Particle
& inpart,
82
const
ParticleVector
& decay,
83
ShowerInteraction
inter,
MEOption
meopt);
84
88
virtual
void
setDecayInfo(
PDPtr
incoming
,
PDPair
outgoing
,
89
vector<VertexBasePtr>,
90
map<ShowerInteraction,VertexBasePtr> &,
91
const
vector<map<ShowerInteraction,VertexBasePtr> > &,
92
map<ShowerInteraction,VertexBasePtr>);
93
95
96
public
:
97
104
void
persistentOutput(
PersistentOStream
& os)
const
;
105
111
void
persistentInput(
PersistentIStream
& is,
int
version);
113
120
static
void
Init();
121
122
protected
:
123
130
virtual
IBPtr
clone()
const
;
131
136
virtual
IBPtr
fullclone()
const
;
138
139
private
:
140
145
TVVDecayer
& operator=(
const
TVVDecayer
&) =
delete
;
146
147
private
:
148
152
vector<AbstractVVTVertexPtr>
vertex_
;
153
157
vector<VVTVertexPtr>
perturbativeVertex_
;
158
162
map<ShowerInteraction,AbstractVVVVertexPtr>
outgoingVertex1_
;
163
167
map<ShowerInteraction,AbstractVVVVertexPtr>
outgoingVertex2_
;
168
172
map<ShowerInteraction,AbstractVVVTVertexPtr>
fourPointVertex_
;
173
177
mutable
RhoDMatrix
rho_
;
178
182
mutable
vector<Helicity::TensorWaveFunction>
tensors_
;
183
187
mutable
vector<Helicity::VectorWaveFunction> vectors_[2];
188
192
mutable
RhoDMatrix
rho3_
;
193
197
mutable
vector<Helicity::TensorWaveFunction>
tensors3_
;
198
202
mutable
vector<Helicity::VectorWaveFunction> vectors3_[2];
203
207
mutable
vector<Helicity::VectorWaveFunction>
gluon_
;
208
209
};
210
211
}
212
213
#endif
/* HERWIG_TVVDecayer_H */
Herwig::TVVDecayer::tensors3_
vector< Helicity::TensorWaveFunction > tensors3_
Tensor wavefunction for 3 body decay.
Definition:
TVVDecayer.h:197
ThePEG::PersistentIStream
Herwig::TVVDecayer
The TVVDecayer class implements the decay of a tensor to 2 vector bosons in a general model...
Definition:
TVVDecayer.h:34
Herwig::TVVDecayer::gluon_
vector< Helicity::VectorWaveFunction > gluon_
Vector wavefunction for 3 body decay.
Definition:
TVVDecayer.h:207
ThePEG::Particle
Herwig::ShowerInteraction
ShowerInteraction
Handy header file to be included in all Shower classes.
Definition:
ShowerInteraction.h:23
Herwig::TVVDecayer::vertex_
vector< AbstractVVTVertexPtr > vertex_
Abstract pointer to AbstractVVTVertex.
Definition:
TVVDecayer.h:152
Herwig::TVVDecayer::rho_
RhoDMatrix rho_
Spin density matrix.
Definition:
TVVDecayer.h:177
ThePEG::PersistentOStream
Herwig::TVVDecayer::rho3_
RhoDMatrix rho3_
Spin density matrix for 3 body decay.
Definition:
TVVDecayer.h:192
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
ThePEG
Herwig::GeneralTwoBodyDecayer::PMPair
pair< tcPDPtr, Energy > PMPair
A ParticleData ptr and (possible) mass pair.
Definition:
GeneralTwoBodyDecayer.h:43
ThePEG::Helicity::outgoing
outgoing
Herwig::TVVDecayer::perturbativeVertex_
vector< VVTVertexPtr > perturbativeVertex_
Pointer to the perturbative vertex.
Definition:
TVVDecayer.h:157
Herwig::TVVDecayer::outgoingVertex1_
map< ShowerInteraction, AbstractVVVVertexPtr > outgoingVertex1_
Abstract pointer to AbstractVVVVertex for QCD radiation from outgoing vector.
Definition:
TVVDecayer.h:162
Herwig::DecayIntegrator::MEOption
MEOption
Enum for the matrix element option.
Definition:
DecayIntegrator.h:79
Herwig::HwDecayerBase::POWHEGType
POWHEGType
Virtual members to be overridden by inheriting classes which implement hard corrections.
Definition:
HwDecayerBase.h:76
Herwig::TVVDecayer::fourPointVertex_
map< ShowerInteraction, AbstractVVVTVertexPtr > fourPointVertex_
Abstract pointer to AbstractVVVTVertex for QCD radiation from 4 point vertex.
Definition:
TVVDecayer.h:172
Herwig::TVVDecayer::hasPOWHEGCorrection
virtual POWHEGType hasPOWHEGCorrection()
Has a POWHEG style correction.
Definition:
TVVDecayer.h:67
Herwig::TVVDecayer::outgoingVertex2_
map< ShowerInteraction, AbstractVVVVertexPtr > outgoingVertex2_
Abstract pointer to AbstractVVVVertex for QCD radiation from outgoing vector.
Definition:
TVVDecayer.h:167
ThePEG::PDPair
pair< PDPtr, PDPtr > PDPair
Herwig::TVVDecayer::tensors_
vector< Helicity::TensorWaveFunction > tensors_
Polarization tensors of decaying particle.
Definition:
TVVDecayer.h:182
ThePEG::PDPtr
ThePEG::Ptr< ParticleData >::pointer PDPtr
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
Herwig::TVVDecayer::TVVDecayer
TVVDecayer()
The default constructor.
Definition:
TVVDecayer.h:41
ThePEG::ParticleVector
vector< PPtr > ParticleVector
ThePEG::RhoDMatrix
Generated on Sat Apr 11 2020 14:50:32 for Herwig by
1.8.13