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MatrixElement
Lepton
MEee2Mesons.h
1
// -*- C++ -*-
2
#ifndef Herwig_MEee2Mesons_H
3
#define Herwig_MEee2Mesons_H
4
//
5
// This is the declaration of the MEee2Mesons class.
6
//
7
8
#include "Herwig/MatrixElement/MEMultiChannel.h"
9
#include "Herwig/Decay/WeakCurrents/WeakCurrent.h"
10
#include "Herwig/MatrixElement/ProductionMatrixElement.h"
11
12
namespace
Herwig
{
13
14
using namespace
ThePEG
;
15
23
class
MEee2Mesons
:
public
MEMultiChannel
{
24
25
public
:
26
30
MEee2Mesons
();
31
32
public
:
33
40
virtual
unsigned
int
orderInAlphaS
()
const
;
41
46
virtual
unsigned
int
orderInAlphaEW
()
const
;
47
51
virtual
Energy2
scale
()
const
;
53
57
virtual
void
constructVertex
(
tSubProPtr
);
58
59
60
public
:
61
68
void
persistentOutput
(
PersistentOStream
& os)
const
;
69
75
void
persistentInput
(
PersistentIStream
& is,
int
version);
77
84
static
void
Init
();
85
86
87
protected
:
88
93
virtual
double
me2
(
const
int
ichan)
const
;
94
100
virtual
double
helicityME
(
const
int
ichan,
const
cPDVector
& particles,
101
const
vector<Lorentz5Momentum> & momenta)
const
;
102
103
protected
:
104
111
virtual
IBPtr
clone
()
const
;
112
117
virtual
IBPtr
fullclone
()
const
;
119
120
protected
:
121
129
virtual
void
doinit
();
130
135
virtual
void
doinitrun
();
137
141
void
setFlavour
();
142
143
private
:
144
149
MEee2Mesons
&
operator=
(
const
MEee2Mesons
&) =
delete
;
150
151
private :
152
156
unsigned
int
flavOpt_
;
157
161
WeakCurrentPtr
current_
;
162
166
mutable
ProductionMatrixElement
me_
;
167
171
map<int,int>
modeMap_
;
172
176
FlavourInfo
flavour_
;
177
};
178
179
}
180
181
#endif
/* Herwig_MEee2Mesons_H */
Herwig::MEMultiChannel
Here is the documentation of the MEMultiChannel class.
Definition:
MEMultiChannel.h:21
Herwig::MEee2Mesons
The MEee2Mesons class implements annhilation to mesons at low energy using hadronic currents.
Definition:
MEee2Mesons.h:23
Herwig::MEee2Mesons::doinitrun
virtual void doinitrun()
Initialize this object.
Herwig::MEee2Mesons::doinit
virtual void doinit()
Initialize this object after the setup phase before saving an EventGenerator to disk.
Herwig::MEee2Mesons::modeMap_
map< int, int > modeMap_
Map for the modes.
Definition:
MEee2Mesons.h:171
Herwig::MEee2Mesons::Init
static void Init()
The standard Init function used to initialize the interfaces.
Herwig::MEee2Mesons::persistentInput
void persistentInput(PersistentIStream &is, int version)
Function used to read in object persistently.
Herwig::MEee2Mesons::orderInAlphaS
virtual unsigned int orderInAlphaS() const
Return the order in in which this matrix element is given.
Herwig::MEee2Mesons::constructVertex
virtual void constructVertex(tSubProPtr)
Construct the vertex of spin correlations.
Herwig::MEee2Mesons::clone
virtual IBPtr clone() const
Make a simple clone of this object.
Herwig::MEee2Mesons::setFlavour
void setFlavour()
Set up the flavours allowed in the current.
Herwig::MEee2Mesons::current_
WeakCurrentPtr current_
the hadronic current
Definition:
MEee2Mesons.h:161
Herwig::MEee2Mesons::flavour_
FlavourInfo flavour_
The flavour of the hadronic system.
Definition:
MEee2Mesons.h:176
Herwig::MEee2Mesons::flavOpt_
unsigned int flavOpt_
Option for the flavour of the particles in the current.
Definition:
MEee2Mesons.h:156
Herwig::MEee2Mesons::orderInAlphaEW
virtual unsigned int orderInAlphaEW() const
Return the order in in which this matrix element is given.
Herwig::MEee2Mesons::helicityME
virtual double helicityME(const int ichan, const cPDVector &particles, const vector< Lorentz5Momentum > &momenta) const
Return the matrix element squared for a given mode and phase-space channel, with the helicities ampli...
Herwig::MEee2Mesons::scale
virtual Energy2 scale() const
Return the scale associated with the last set phase space point.
Herwig::MEee2Mesons::me_
ProductionMatrixElement me_
The matrix element.
Definition:
MEee2Mesons.h:166
Herwig::MEee2Mesons::operator=
MEee2Mesons & operator=(const MEee2Mesons &)=delete
The assignment operator is private and must never be called.
Herwig::MEee2Mesons::MEee2Mesons
MEee2Mesons()
The default constructor.
Herwig::MEee2Mesons::fullclone
virtual IBPtr fullclone() const
Make a clone of this object, possibly modifying the cloned object to make it sane.
Herwig::MEee2Mesons::me2
virtual double me2(const int ichan) const
Return the matrix element squared for a given mode and phase-space channel.
Herwig::MEee2Mesons::persistentOutput
void persistentOutput(PersistentOStream &os) const
Function used to write out object persistently.
Herwig::ProductionMatrixElement
The storage of the helicity amplitude expression for the matrix element of a hard process.
Definition:
ProductionMatrixElement.h:34
ThePEG::PersistentIStream
ThePEG::PersistentOStream
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
ThePEG
ThePEG::IBPtr
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
ThePEG::tSubProPtr
ThePEG::Ptr< SubProcess >::transient_pointer tSubProPtr
ThePEG::cPDVector
vector< cPDPtr > cPDVector
Herwig::FlavourInfo
Definition:
IsoSpin.h:46
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