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 // -*- C++ -*-
 //
 // MatchboxAmplitudehbbbarg.h is a part of Herwig - A multi-purpose Monte Carlo event generator
 // Copyright (C) 2002-2019 The Herwig Collaboration
 //
 // Herwig is licenced under version 3 of the GPL, see COPYING for details.
 // Please respect the MCnet academic guidelines, see GUIDELINES for details.
 //
 #ifndef Herwig_MatchboxAmplitudehbbbarg_H
 #define Herwig_MatchboxAmplitudehbbbarg_H
 //
 // This is the declaration of the MatchboxAmplitudehbbbarg class.
 //
 
 #include "Herwig/MatrixElement/Matchbox/Base/MatchboxAmplitude.h"
 #include "Herwig/MatrixElement/Matchbox/Builtin/Amplitudes/MatchboxCurrents.h"
 
 namespace Herwig {
 
 using namespace ThePEG;
 
 /**
  * \ingroup Matchbox
  * 
  *
  * \brief MatchboxAmplitudehbbbarg
  */
 class MatchboxAmplitudehbbbarg: 
     public MatchboxAmplitude, public MatchboxCurrents {
 
 public:
 
   /**
    * The default constructor.
    */
   MatchboxAmplitudehbbbarg();
 
 public:
 
   /**
    * Return true, if this amplitude can handle the given process.
    */
   virtual bool canHandle(const PDVector&) const;
 
   /**
    * Return the (tree-level) order in \f$g_S\f$ in which this matrix
    * element is given.
    */
   virtual unsigned int orderInGs() const { return 1; }
 
   /**
    * Return the (tree-level) order in \f$g_{EM}\f$ in which this matrix
    * element is given.
    */
   virtual unsigned int orderInGem() const { return 1; }
 
   /**
    * Return true, if this amplitude is capable of calculating one-loop
    * (QCD) corrections.
    */
   virtual bool haveOneLoop() const { return true; }
 
   /**
    * Calculate the tree level amplitudes for the phasespace point
    * stored in lastXComb.
    */
   virtual void prepareAmplitudes(Ptr<MatchboxMEBase>::tcptr);
 
   /**
    * Evaluate the amplitude for the given colour tensor id and
    * helicity assignment
    */
   virtual Complex evaluate(size_t, const vector<int>&, Complex&);
 
   /**
    * Evaluate the amplitude for the given colour tensor id and
    * helicity assignment
    */
   //virtual Complex evaluateOneLoop(size_t, const vector<int>&);
 
   /**
    * Return true, if one loop corrections are given in the conventions
    * of BDK.
    */
   virtual bool isBDK() const { return true; }
 
   /**
    * Return the value of the dimensional regularization
    * parameter. Note that renormalization scale dependence is fully
    * restored in DipoleIOperator.
    */
   virtual Energy2 mu2() const { return lastSHat(); }
 
   /**
    * Flush all cashes.
    */
   virtual void flushCaches() {
     MatchboxCurrents::reset();
     MatchboxAmplitude::flushCaches();
   }
 
 public:
 
   /** @name Functions used by the persistent I/O system. */
   //@{
   /**
    * Function used to write out object persistently.
    * @param os the persistent output stream written to.
    */
   void persistentOutput(PersistentOStream & os) const;
 
   /**
    * Function used to read in object persistently.
    * @param is the persistent input stream read from.
    * @param version the version number of the object when written.
    */
   void persistentInput(PersistentIStream & is, int version);
   //@}
 
   /**
    * The standard Init function used to initialize the interfaces.
    * Called exactly once for each class by the class description system
    * before the main function starts or
    * when this class is dynamically loaded.
    */
   static void Init();
 
 protected:
 
   /** @name Clone Methods. */
   //@{
   /**
    * Make a simple clone of this object.
    * @return a pointer to the new object.
    */
   virtual IBPtr clone() const;
 
   /** Make a clone of this object, possibly modifying the cloned object
    * to make it sane.
    * @return a pointer to the new object.
    */
   virtual IBPtr fullclone() const;
   //@}
 
 
 // If needed, insert declarations of virtual function defined in the
 // InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
 
 protected:
 
   /** @name Standard Interfaced functions. */
   //@{
   /**
    * Initialize this object after the setup phase before saving an
    * EventGenerator to disk.
    * @throws InitException if object could not be initialized properly.
    */
   virtual void doinit();
 
   /**
    * Initialize this object. Called in the run phase just before
    * a run begins.
    */
   virtual void doinitrun();
   //@}
 private:
 
   /*
    * The interfaced up quark mass
    */
   Energy interfaceUMass; 
   /*
    * The interfaced down quark mass
    */
   Energy interfaceDMass; 
   /* 
    * The interfaced strange quark mass
    */
   Energy interfaceSMass; 
   /*
    * The interfaced charm quark mass
    */
   Energy interfaceCMass; 
   /*
    * The interfaced bottom quark mass
    */
   Energy interfaceBMass; 
 private:
 
   /**
    * The assignment operator is private and must never be called.
    * In fact, it should not even be implemented.
    */
   MatchboxAmplitudehbbbarg & operator=(const MatchboxAmplitudehbbbarg &) = delete;
 
 };
 
 }
 
 #endif /* Herwig_MatchboxAmplitudehbbbarg_H */

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