Models/LH/LHFFPVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_LHFFPVertex_H
0003 #define HERWIG_LHFFPVertex_H
0004 //
0005 // This is the declaration of the LHFFPVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Vector/FFVVertex.h"
0009 #include "LHModel.h"
0010
0011 namespace Herwig {
0012
0013 using namespace ThePEG;
0014
0015 /**
0016  *  The LHFFPVertex class implements the couplings of the fermions,
0017  *  both of the Standard Model and the additional heavy top to the
0018  *  photon and \f$A_H\f$ bosons in the Little Higgs model.
0019  */
0020 class LHFFPVertex: public Helicity::FFVVertex {
0021
0022 public:
0023
0024   /**
0025    * The default constructor.
0026    */
0027   LHFFPVertex();
0028
0029   /**
0030    * Calculate the couplings.
0031    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0032    * @param part1 The ParticleData pointer for the first  particle.
0033    * @param part2 The ParticleData pointer for the second particle.
0034    * @param part3 The ParticleData pointer for the third  particle.
0035    */
0036   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3);
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    * The standard Init function used to initialize the interfaces.
0056    * Called exactly once for each class by the class description system
0057    * before the main function starts or
0058    * when this class is dynamically loaded.
0059    */
0060   static void Init();
0061
0062 protected:
0063
0064   /** @name Clone Methods. */
0065   //@{
0066   /**
0067    * Make a simple clone of this object.
0068    * @return a pointer to the new object.
0069    */
0070   virtual IBPtr clone() const {return new_ptr(*this);}
0071
0072   /** Make a clone of this object, possibly modifying the cloned object
0073    * to make it sane.
0074    * @return a pointer to the new object.
0075    */
0076   virtual IBPtr fullclone() const {return new_ptr(*this);}
0077   //@}
0078
0079 protected:
0080
0081   /** @name Standard Interfaced functions. */
0082   //@{
0083   /**
0084    * Initialize this object after the setup phase before saving an
0085    * EventGenerator to disk.
0086    * @throws InitException if object could not be initialized properly.
0087    */
0088   virtual void doinit();
0089   //@}
0090
0091 private:
0092
0093   /**
0094    * The assignment operator is private and must never be called.
0095    * In fact, it should not even be implemented.
0096    */
0097   LHFFPVertex & operator=(const LHFFPVertex &) = delete;
0098
0099 private:
0100
0101   /**
0102    * Storage of the couplings.
0103    */
0104   //@{
0105   /**
0106    *  The charge of the Standard Model fermions.
0107    */
0108   vector<double> _charge;
0109
0110   /**
0111    *  The last value of the coupling calculated.
0112    */
0113   Complex _couplast;
0114
0115   /**
0116    *  The scale \f$q^2\f$ at which the coupling was last evaluated.
0117    */
0118   Energy2 _q2last;
0119
0120   /**
0121    *  Left couplings for the heavy photon
0122    */
0123   vector<double> _gl;
0124
0125   /**
0126    *  Right couplings for the heavy photon
0127    */
0128   vector<double> _gr;
0129   //@}
0130
0131 };
0132
0133 }
0134
0135 #endif /* HERWIG_LHFFPVertex_H */