Helicity/Vertex/AbstractSSSTVertex.h

0001 // -*- C++ -*-
0002 #ifndef HELICITY_AbstractSSSTVertex_H
0003 #define HELICITY_AbstractSSSTVertex_H
0004 //
0005 // This is the declaration of the AbstractSSSTVertex class.
0006 //
0007
0008 #include "VertexBase.h"
0009 #include "ThePEG/Helicity/WaveFunction/ScalarWaveFunction.h"
0010 #include "ThePEG/Helicity/WaveFunction/TensorWaveFunction.h"
0011 #include "AbstractSSSTVertex.fh"
0012
0013 namespace ThePEG {
0014 namespace Helicity {
0015
0016 /**
0017  * The AbstractSSSTVertex class is the base class for all scalar-scalar-scalar-tensor
0018  * interactions in ThePEG.
0019  */
0020 class AbstractSSSTVertex: public VertexBase {
0021
0022 public:
0023
0024   /**
0025    * Default constructor
0026    */
0027   AbstractSSSTVertex() : VertexBase(VertexType::SSST) {}
0028
0029   /**
0030    * Members to calculate the helicity amplitude expressions for vertices
0031    * and off-shell particles.
0032    */
0033   //@{
0034   /**
0035    * Evalulate the vertex.
0036    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0037    * @param sca1  The wavefunction for the first  scalar.
0038    * @param sca2  The wavefunction for the second scalar.
0039    * @param sca3  The wavefunction for the third  scalar.
0040    * @param ten4  The wavefunction for the tensor.
0041    */
0042   virtual Complex evaluate(Energy2 q2,const ScalarWaveFunction & sca1,
0043                const ScalarWaveFunction & sca2,
0044                const ScalarWaveFunction & sca3,
0045                const TensorWaveFunction & ten4) = 0;
0046   //@}
0047
0048 public:
0049
0050   /**
0051    * The standard Init function used to initialize the interfaces.
0052    * Called exactly once for each class by the class description system
0053    * before the main function starts or
0054    * when this class is dynamically loaded.
0055    */
0056   static void Init();
0057
0058 private:
0059
0060   /**
0061    * The assignment operator is private and must never be called.
0062    * In fact, it should not even be implemented.
0063    */
0064   AbstractSSSTVertex & operator=(const AbstractSSSTVertex &) = delete;
0065
0066 };
0067
0068 }
0069 }
0070
0071
0072 namespace ThePEG {
0073
0074 }
0075 #endif /* HELICITY_AbstractSSSTVertex_H */