Models/ADD/ADDModelSSGRVertex.h

0001 // -*- C++ -*-
0002 //
0003 // ADDModelSSGRVertex.h is a part of Herwig - A multi-purpose Monte Carlo event generator
0004 // Copyright (C) 2002-2019 The Herwig Collaboration
0005 //
0006 // Herwig is licenced under version 3 of the GPL, see COPYING for details.
0007 // Please respect the MCnet academic guidelines, see GUIDELINES for details.
0008 //
0009 #ifndef HERWIG_ADDModelSSGRVertex_H
0010 #define HERWIG_ADDModelSSGRVertex_H
0011 //
0012 // This is the declaration of the ADDModelSSGRVertex class.
0013
0014 #include "ThePEG/Helicity/Vertex/Tensor/SSTVertex.h"
0015 #include "ADDModel.h"
0016
0017 namespace Herwig {
0018 using namespace ThePEG;
0019
0020 /** \ingroup Helicity
0021  *
0022  *  The ADDModelSSGRVertex class is thew implementation of the graviton
0023  *  coupling to the Higgs in the ADDModel. It inherits from the SSTVertex
0024  *  and implements the setCoupling member
0025  *
0026  *  @see SSTVertex
0027  *  @see VertexBase
0028  */
0029 class ADDModelSSGRVertex: public SSTVertex {
0030
0031 public:
0032
0033   /**
0034    * Default constructor.
0035    */
0036   ADDModelSSGRVertex();
0037
0038   /** @name Functions used by the persistent I/O system. */
0039   //@{
0040   /**
0041    * Function used to write out object persistently.
0042    * @param os the persistent output stream written to.
0043    */
0044   void persistentOutput(PersistentOStream & os) const;
0045
0046   /**
0047    * Function used to read in object persistently.
0048    * @param is the persistent input stream read from.
0049    * @param version the version number of the object when written.
0050    */
0051   void persistentInput(PersistentIStream & is, int version);
0052   //@}
0053
0054   /**
0055    * Standard Init function used to initialize the interfaces.
0056    */
0057   static void Init();
0058
0059   /**
0060    * Calculate the couplings.
0061    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0062    * @param part1 The ParticleData pointer for the first  particle.
0063    * @param part2 The ParticleData pointer for the second particle.
0064    * @param part3 The ParticleData pointer for the third  particle.
0065    */
0066   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3);
0067
0068 protected:
0069
0070   /** @name Clone Methods. */
0071   //@{
0072   /**
0073    * Make a simple clone of this object.
0074    * @return a pointer to the new object.
0075    */
0076   virtual IBPtr clone() const {return new_ptr(*this);}
0077
0078   /** Make a clone of this object, possibly modifying the cloned object
0079    * to make it sane.
0080    * @return a pointer to the new object.
0081    */
0082   virtual IBPtr fullclone() const {return new_ptr(*this);}
0083   //@}
0084
0085 protected:
0086
0087   /**
0088    * Initialize this object after the setup phase before saving and
0089    * EventGenerator to disk.
0090    * @throws InitException if object could not be initialized properly.
0091    */
0092   virtual void doinit();
0093
0094   /**
0095    * Calculate the propagator for a diagram.
0096    * @param iopt The option for the Breit-Wigner shape
0097    * @param q2 The scale
0098    * @param part The ParticleData pointer for the off-shell particle.
0099    * @param mass The mass if not to be taken from the ParticleData object
0100    * @param width The width if not to be taken from the ParticleData object
0101    */
0102   virtual Complex propagator(int iopt, Energy2 q2,tcPDPtr part,
0103                  Energy mass=-GeV, Energy width=-GeV);
0104
0105 private:
0106
0107   /**
0108    * Private and non-existent assignment operator.
0109    */
0110   ADDModelSSGRVertex & operator=(const ADDModelSSGRVertex &) = delete;
0111
0112   /**
0113    * Coupling.
0114    */
0115   InvEnergy kappa_;
0116
0117   /**
0118    *  Mass ratio for the propagator
0119    */
0120   Energy r_;
0121 };
0122
0123 }
0124
0125 #endif /* HERWIG_ADDModelSSGRVertex_H */