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ThePEG 2.3.0
FFSVertex.h
1// -*- C++ -*-
2//
3// FFSVertex.h is a part of ThePEG - Toolkit for HEP Event Generation
4// Copyright (C) 2003-2019 Peter Richardson, Leif Lonnblad
5//
6// ThePEG 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 ThePEG_FFSVertex_H
10#define ThePEG_FFSVertex_H
11//
12// This is the declaration of the FFSVertex class.
13
14#include "ThePEG/Helicity/Vertex/AbstractFFSVertex.h"
15#include "ThePEG/Helicity/WaveFunction/ScalarWaveFunction.h"
16#include "ThePEG/Helicity/WaveFunction/SpinorWaveFunction.h"
17#include "ThePEG/Helicity/WaveFunction/SpinorBarWaveFunction.h"
18#include "FFSVertex.fh"
19
20namespace ThePEG {
21
22namespace Helicity{
23
42
43public:
44
48 static void Init();
49
50public:
51
65 const SpinorBarWaveFunction & sbar2,
66 const ScalarWaveFunction & sca3);
67
81 const SpinorWaveFunction & sp1,
82 const ScalarWaveFunction & sca3,
83 complex<Energy> mass=-GeV, complex<Energy> width=-GeV);
84
98 const SpinorBarWaveFunction & sbar2,
99 const ScalarWaveFunction & sca3,
100 complex<Energy> mass=-GeV, complex<Energy> width=-GeV);
101
115 const SpinorWaveFunction & sp1,
116 const SpinorBarWaveFunction & sbar2,
117 complex<Energy> mass=-GeV, complex<Energy> width=-GeV);
118
132 virtual void setCoupling(Energy2 q2,tcPDPtr part1,
133 tcPDPtr part2,tcPDPtr part3)=0;
134
141 assert(false);
142 }
144
152 Complex left() { return _left; }
153
157 Complex right() { return _right; }
159
160protected:
161
169 void left(Complex in) { _left = in; }
170
174 void right(Complex in) { _right = in; }
176
177private:
178
182 FFSVertex & operator=(const FFSVertex &) = delete;
183
184private:
185
190
195
196};
197}
198
199}
200#endif /* ThePEG_FFSVertex_H */
The AbstractFFSVertex class provides a base class for all fermion-fermion-scalar vertices in ThePEG.
The FFSVertex class is the implementation of the interact of a scalar boson and a fermion-antifermion...
Definition: FFSVertex.h:41
virtual void setCoupling(Energy2, tcPDPtr, tcPDPtr, tcPDPtr, tcPDPtr)
Dummy setCouplings for a four point interaction This method is virtual and must be implemented in cla...
Definition: FFSVertex.h:140
FFSVertex & operator=(const FFSVertex &)=delete
Private and non-existent assignment operator.
Complex _left
Storage of the left coupling.
Definition: FFSVertex.h:189
Complex evaluate(Energy2 q2, const SpinorWaveFunction &sp1, const SpinorBarWaveFunction &sbar2, const ScalarWaveFunction &sca3)
Members to calculate the helicity amplitude expressions for vertices and off-shell particles.
void right(Complex in)
Set the right coupling.
Definition: FFSVertex.h:174
static void Init()
Standard Init function used to initialize the interfaces.
SpinorWaveFunction evaluate(Energy2 q2, int iopt, tcPDPtr out, const SpinorWaveFunction &sp1, const ScalarWaveFunction &sca3, complex< Energy > mass=-GeV, complex< Energy > width=-GeV)
Evaluate the off-shell spinor coming from the vertex.
SpinorBarWaveFunction evaluate(Energy2 q2, int iopt, tcPDPtr out, const SpinorBarWaveFunction &sbar2, const ScalarWaveFunction &sca3, complex< Energy > mass=-GeV, complex< Energy > width=-GeV)
Evaluate the off-shell barred spinor coming from the vertex.
Complex _right
Storage of the right coupling.
Definition: FFSVertex.h:194
Complex left()
Get the couplings.
Definition: FFSVertex.h:152
ScalarWaveFunction evaluate(Energy2 q2, int iopt, tcPDPtr out, const SpinorWaveFunction &sp1, const SpinorBarWaveFunction &sbar2, complex< Energy > mass=-GeV, complex< Energy > width=-GeV)
Evaluate the off-shell scalar coming from the vertex.
void left(Complex in)
Set the couplings.
Definition: FFSVertex.h:169
Complex right()
Get the right coupling.
Definition: FFSVertex.h:157
virtual void setCoupling(Energy2 q2, tcPDPtr part1, tcPDPtr part2, tcPDPtr part3)=0
Set coupling methods.
TransientConstRCPtr is a simple wrapper around a bare const pointer which can be assigned to and from...
Definition: RCPtr.h:696
This is the main namespace within which all identifiers in ThePEG are declared.
Definition: FactoryBase.h:28
std::complex< double > Complex
ThePEG code should use Complex for all complex scalars.
Definition: Complex.h:23