Models/UED/UEDF1F1Z0Vertex.h

0001 // -*- C++ -*-
0002 //
0003 // UEDF1F1Z0Vertex.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_UEDF1F1Z0Vertex_H
0010 #define HERWIG_UEDF1F1Z0Vertex_H
0011 //
0012 // This is the declaration of the UEDF1F1Z0Vertex class.
0013 //
0014
0015 #include "ThePEG/Helicity/Vertex/Vector/FFVVertex.h"
0016 #include "UEDBase.h"
0017
0018 namespace Herwig {
0019 using namespace ThePEG;
0020
0021 /**
0022  * This is the implementation of the level-1 fermion-fermion Z-boson.
0023  * It inherits from FFVVertex and implements the setCoupling member.
0024  *
0025  * @see \ref UEDF1F1Z0VertexInterfaces "The interfaces"
0026  * defined for UEDF1F1Z0Vertex.
0027  */
0028 class UEDF1F1Z0Vertex: public FFVVertex {
0029
0030 public:
0031
0032   /**
0033    * The default constructor.
0034    */
0035   UEDF1F1Z0Vertex();
0036
0037 public:
0038
0039   /** @name Functions used by the persistent I/O system. */
0040   //@{
0041   /**
0042    * Function used to write out object persistently.
0043    * @param os the persistent output stream written to.
0044    */
0045   void persistentOutput(PersistentOStream & os) const;
0046
0047   /**
0048    * Function used to read in object persistently.
0049    * @param is the persistent input stream read from.
0050    * @param version the version number of the object when written.
0051    */
0052   void persistentInput(PersistentIStream & is, int version);
0053   //@}
0054
0055   /**
0056    * The standard Init function used to initialize the interfaces.
0057    * Called exactly once for each class by the class description system
0058    * before the main function starts or
0059    * when this class is dynamically loaded.
0060    */
0061   static void Init();
0062
0063 public:
0064
0065   /** Calculate the coupling
0066    *@param q2 The scale at which to evaluate the coupling
0067    *@param part1 The first interacting particle
0068    *@param part2 The second interacting particle
0069    *@param part3 The third interacting particle
0070    */
0071   virtual void setCoupling(Energy2 q2, tcPDPtr part1, tcPDPtr part2,
0072                tcPDPtr part3);
0073
0074 protected:
0075
0076   /** @name Clone Methods. */
0077   //@{
0078   /**
0079    * Make a simple clone of this object.
0080    * @return a pointer to the new object.
0081    */
0082   virtual IBPtr clone() const {return new_ptr(*this);}
0083
0084   /** Make a clone of this object, possibly modifying the cloned object
0085    * to make it sane.
0086    * @return a pointer to the new object.
0087    */
0088   virtual IBPtr fullclone() const {return new_ptr(*this);}
0089   //@}
0090
0091
0092 protected:
0093
0094   /** @name Standard Interfaced functions. */
0095   //@{
0096   /**
0097    * Initialize this object after the setup phase before saving an
0098    * EventGenerator to disk.
0099    * @throws InitException if object could not be initialized properly.
0100    */
0101   virtual void doinit();
0102   //@}
0103
0104 private:
0105
0106   /**
0107    * The assignment operator is private and must never be called.
0108    * In fact, it should not even be implemented.
0109    */
0110   UEDF1F1Z0Vertex & operator=(const UEDF1F1Z0Vertex &) = delete;
0111
0112 private:
0113
0114   /**
0115    * The value if \f$\sin^2\theta_W\f$
0116    */
0117   double theSin2ThW;
0118
0119   /**
0120    * The value if \f$\cos\theta_W\f$
0121    */
0122   double theCosThW;
0123
0124   /**
0125    * The value of the inverse radius
0126    */
0127   InvEnergy theRadius;
0128
0129   /**
0130    * The PDG code of the 1st fermion when the vertex was last evaluated
0131    */
0132   long theID1Last;
0133
0134   /**
0135    * The PDG code of the 2nd fermion when the vertex was last evaluated
0136    */
0137   long theID2Last;
0138
0139   /**
0140    * The energy where the coupling was last evaluated
0141    */
0142   Energy2 theq2Last;
0143
0144   /**
0145    *
0146    * The value of the coupling when it was last evaluated
0147    */
0148   Complex theCoupLast;
0149
0150   /**
0151    *
0152    * The value of the coupling when it was last evaluated
0153    */
0154   Complex theLeftLast;
0155
0156   /**
0157    *
0158    * The value of the coupling when it was last evaluated
0159    */
0160   Complex theRightLast;
0161 };
0162 }
0163
0164 #endif /* HERWIG_UEDF1F1Z0Vertex_H */