Models/LHTP/LHTPFFWVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_LHTPFFWVertex_H
0003 #define HERWIG_LHTPFFWVertex_H
0004 //
0005 // This is the declaration of the LHTPFFWVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Vector/FFVVertex.h"
0009 #include "ThePEG/StandardModel/StandardModelBase.h"
0010
0011 namespace Herwig {
0012
0013 using namespace ThePEG;
0014
0015 /**
0016  * The LHTPFFWVertex class implements the coupling of the \f$W^\pm\f$
0017  * and \f$W^\pm_H\f$ bosons of the Little Higgs model with T-parity to fermions.
0018  * For simplicity the coupling are assumed to be flavour diagonal.
0019  */
0020 class LHTPFFWVertex: public Helicity::FFVVertex {
0021
0022 public:
0023
0024   /**
0025    * The default constructor.
0026    */
0027   LHTPFFWVertex();
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 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;
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;
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   LHTPFFWVertex & operator=(const LHTPFFWVertex &) = delete;
0097
0098 private:
0099
0100   /**
0101    * @name Storage of the couplings.
0102    */
0103   //@{
0104   /**
0105    *  Left mixings
0106    */
0107   double sL_,cL_;
0108
0109   /**
0110    *  The elements of the CKM matrix.
0111    */
0112   vector<vector<Complex> > ckm_;
0113
0114   /**
0115    *  The last value of the electroweak coupling calculated.
0116    */
0117   Complex coupLast_;
0118
0119   /**
0120    *  The scale \f$q^2\f$ at which the coupling was last evaluated.
0121    */
0122   Energy2 q2Last_;
0123   //@}
0124 };
0125
0126 }
0127
0128 #endif /* HERWIG_LHTPFFWVertex_H */