Models/LH/LHFFHVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_LHFFHVertex_H
0003 #define HERWIG_LHFFHVertex_H
0004 //
0005 // This is the declaration of the LHFFHVertex class.
0006 //
0007
0008 #include "LHModel.h"
0009 #include "ThePEG/Helicity/Vertex/Scalar/FFSVertex.h"
0010
0011 namespace Herwig {
0012
0013 using namespace ThePEG;
0014
0015 /**
0016  * The LHFFHVertex class implements the couplings of the fermions to
0017  * the Higgs bosons of the Little Higgs model.
0018  */
0019 class LHFFHVertex: public Helicity::FFSVertex {
0020
0021 public:
0022
0023   /**
0024    * The default constructor.
0025    */
0026   LHFFHVertex();
0027
0028   /**
0029    * Calculate the couplings.
0030    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0031    * @param part1 The ParticleData pointer for the first  particle.
0032    * @param part2 The ParticleData pointer for the second particle.
0033    * @param part3 The ParticleData pointer for the third  particle.
0034    * @param ioff Which particle is off-shell
0035   */
0036   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3);
0037
0038 public:
0039
0040   /** @name Functions used by the persistent I/O system. */
0041   //@{
0042   /**
0043    * Function used to write out object persistently.
0044    * @param os the persistent output stream written to.
0045    */
0046   void persistentOutput(PersistentOStream & os) const;
0047
0048   /**
0049    * Function used to read in object persistently.
0050    * @param is the persistent input stream read from.
0051    * @param version the version number of the object when written.
0052    */
0053   void persistentInput(PersistentIStream & is, int version);
0054   //@}
0055
0056   /**
0057    * The standard Init function used to initialize the interfaces.
0058    * Called exactly once for each class by the class description system
0059    * before the main function starts or
0060    * when this class is dynamically loaded.
0061    */
0062   static void Init();
0063
0064 protected:
0065
0066   /** @name Clone Methods. */
0067   //@{
0068   /**
0069    * Make a simple clone of this object.
0070    * @return a pointer to the new object.
0071    */
0072   virtual IBPtr clone() const {return new_ptr(*this);}
0073
0074   /** Make a clone of this object, possibly modifying the cloned object
0075    * to make it sane.
0076    * @return a pointer to the new object.
0077    */
0078   virtual IBPtr fullclone() const {return new_ptr(*this);}
0079   //@}
0080
0081 protected:
0082
0083   /**
0084    * Initialize this object after the setup phase before saving and
0085    * EventGenerator to disk.
0086    * @throws InitException if object could not be initialized properly.
0087    */
0088   virtual void doinit();
0089
0090 private:
0091
0092   /**
0093    * The assignment operator is private and must never be called.
0094    * In fact, it should not even be implemented.
0095    */
0096   LHFFHVertex & operator=(const LHFFHVertex &) = delete;
0097
0098 private:
0099
0100   /**
0101    * Pointer to the SM object.
0102    */
0103   tcLHModelPtr _model;
0104
0105   /**
0106    * Storage of the couplings.
0107    */
0108   //@{
0109   /**
0110    *  The PDG code of the last fermion the coupling was evaluated for.
0111    */
0112   int _idlast[2];
0113
0114   /**
0115    *  The last \f$q^2\f$ the coupling was evaluated at.
0116    */
0117   Energy2 _q2last;
0118
0119   /**
0120    * The mass of the last fermion for which the coupling was evaluated.
0121    */
0122   Energy _masslast[2];
0123
0124   /**
0125    *  The factors for the individual interactions
0126    */
0127   vector<complex<InvEnergy> > _coup;
0128   //@}
0129 };
0130
0131 }
0132
0133 #endif /* HERWIG_LHFFHVertex_H */