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 // -*- C++ -*-
 #ifndef HERWIG_SU3BaryonDecupletOctetPhotonDecayer_H
 #define HERWIG_SU3BaryonDecupletOctetPhotonDecayer_H
 // This is the declaration of the SU3BaryonDecupletOctetPhotonDecayer class.
 
 #include "Baryon1MesonDecayerBase.h"
 
 namespace Herwig {
 using namespace ThePEG;
 
 /** \ingroup Decay
  *
  *  The <code>SU3BaryonDecupletOctetPhotonDecayer</code> class is designed for the decay
  *  of a deculpet baryon to an octet baryon and a photon using the SU(3) conserving
  *  term in the chiral lagrangian.
  *
  *  The lagrangian is taken to be
  * \f[ \bar{B}_i^b\gamma^\nu\gamma_5\Delta^\mu_{jbc}Q_j\epsilon^{cij}F_{\mu\nu},\f]
  *  where \f$B\f$ is the matrix field for the baryon octet, \f$\Delta\f$ is the field for
  *  the decuplet, \f$Q\f$ is the charge matrix
  * \f[Q  = \left(\begin{array}{ccc}\frac23&0&0\\
  *                                                           0&-\frac13&0\\
  *                                                           0&0&-\frac13
  *     \end{array}\right),\f]
  *  and \f$F^{\mu\nu}\f$ is the electromagnetic field strength. This form is used when 
  *  the multiplets have the same parity and this form without the \f$\gamma_5\f$ if
  *  the multiplets have opposite parity.
  *
  *  This is one of a number of decayers based on \f$SU(3)\f$ symmetry which are
  *  intended for the decay of excited baryons.
  *
  * @see Baryon1MesonDecayerBase
  * @see SU3BaryonOctetOctetPhotonDecayer
  * @see SU3BaryonDecupletOctetPhotonDecayer
  * @see SU3BaryonDecupletOctetScalarDecayer
  * @see SU3BaryonSingletOctetPhotonDecayer
  * @see SU3BaryonSingletOctetScalarDecayer
  * @see SU3BaryonOctetDecupletScalarDecayer
  * @see SU3BaryonOctetOctetScalarDecayer
  * 
  */
 class SU3BaryonDecupletOctetPhotonDecayer: public Baryon1MesonDecayerBase {
 
 public:
 
   /**
    * Default constructor.
    */
   SU3BaryonDecupletOctetPhotonDecayer();
 
   /**
    * Which of the possible decays is required
    * @param cc Is this mode the charge conjugate
    * @param parent The decaying particle
    * @param children The decay products
    */
   virtual int modeNumber(bool & cc, tcPDPtr parent, 
              const tPDVector & children) const;
 
   /**
    * Output the setup information for the particle database
    * @param os The stream to output the information to
    * @param header Whether or not to output the information for MySQL
    */
   virtual void dataBaseOutput(ofstream & os,bool header) const;
 
 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);
   //@}
 
   /**
    * Standard Init function used to initialize the interfaces.
    */
   static void Init();
 
 protected:
 
   /**
    *  Coupling Members.
    */
   //@{
   /**
    * Couplings for spin-\f$\frac12\f$ to spin-\f$\frac32\f$ and a vector.
    * @param imode The mode
    * @param m0 The mass of the decaying particle.
    * @param m1 The mass of the outgoing baryon.
    * @param m2 The mass of the outgoing meson.
    * @param A1 The coupling \f$A_1\f$ described above.
    * @param A2 The coupling \f$A_2\f$ described above.
    * @param A3 The coupling \f$A_3\f$ described above.
    * @param B1 The coupling \f$B_1\f$ described above.
    * @param B2 The coupling \f$B_2\f$ described above.
    * @param B3 The coupling \f$B_3\f$ described above.
    */
   virtual void threeHalfHalfVectorCoupling(int imode,Energy m0,Energy m1,Energy m2,
                        Complex& A1,Complex& A2,Complex& A3,
                        Complex& B1,Complex& B2,Complex& B3) const;
   //@}
 
 protected:
 
   /** @name Clone Methods. */
   //@{
   /**
    * Make a simple clone of this object.
    * @return a pointer to the new object.
    */
   virtual IBPtr clone() const {return new_ptr(*this);}
 
   /** 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 {return new_ptr(*this);}
   //@}
 
 protected:
 
   /** @name Standard Interfaced functions. */
   //@{
   /**
    * Initialize this object after the setup phase before saving and
    * EventGenerator to disk.
    * @throws InitException if object could not be initialized properly.
    */
   virtual void doinit();
 
   /**
    * Initialize this object to the begining of the run phase.
    */
   virtual void doinitrun();
   //@}
 
 private:
 
   /**
    * Private and non-existent assignment operator.
    */
   SU3BaryonDecupletOctetPhotonDecayer & operator=(const SU3BaryonDecupletOctetPhotonDecayer &) = delete;
 
 private:
 
   /**
    * set-up the modes
    */
   void setupModes(unsigned int) const;
 
 private:
 
   /**
    * the coupling
    */
   InvEnergy C_;
 
   /**
    * the relative parities of the two baryon multiplets
    */
   bool parity_;
 
   /**
    * PDG codes for the various octet baryons
    */
   //@{
   /**
    *  The PDG code for the \f$p\f$-like member of the outgoing octet.
    */
   int proton_;
 
   /**
    *  The PDG code for the \f$n\f$-like member of the outgoing octet.
    */
   int neutron_;
 
   /**
    *  The PDG code for the \f$\Sigma^0\f$-like member of the outgoing octet.
    */
   int sigma0_;
 
   /**
    *  The PDG code for the  \f$\Sigma^+\f$-like member of the outgoing octet.
    */
   int sigmap_;
 
   /**
    *  The PDG code for the  \f$\Sigma^-\f$-like member of the outgoing octet.
    */
   int sigmam_;
 
   /**
    *  The PDG code for the \f$\Sigma^0\f$-like member of the outgoing octet.
    */
   int lambda_;
 
   /**
    *  The PDG code for the \f$\Xi^0\f$-like member of the outgoing octet.
    */
   int xi0_;
 
   /**
    *  The PDG code for the \f$\Xi^-\f$-like member of the outgoing octet.
    */
   int xim_;
   //@}
 
   /**
    * PDG codes for the various decuplet baryons
    */
   //@{
   /**
    *  The PDG code for the \f$\Delta^{++}\f$-like member of the outgoing decuplet.
    */
   int deltapp_;
 
   /**
    *  The PDG code for the \f$\Delta^{+}\f$-like member of the outgoing decuplet.
    */
   int deltap_;
 
   /**
    *  The PDG code for the \f$\Delta^{0}\f$-like member of the outgoing decuplet.
    */
   int delta0_;
 
   /**
    *  The PDG code for the \f$\Delta^{-}\f$-like member of the outgoing decuplet.
    */
   int deltam_;
 
   /**
    *  The PDG code for the \f$\Sigma^{*+}\f$-like member of the outgoing decuplet.
    */
   int sigmasp_;
 
   /**
    *  The PDG code for the \f$\Sigma^{*0}\f$-like member of the outgoing decuplet.
    */
   int sigmas0_;
 
   /**
    *  The PDG code for the \f$\Sigma^{*-}\f$-like member of the outgoing decuplet.
    */
   int sigmasm_;
 
   /**
    *  The PDG code for the \f$\Omega^-\f$-like member of the outgoing decuplet.
    */
   int omega_;
 
   /**
    *  The PDG code for the \f$\Xi^{*-}\f$-like member of the outgoing decuplet.
    */
   int xism_;
 
   /**
    *  The PDG code for the \f$\Xi^{*0}\f$-like member of the outgoing decuplet.
    */
   int xis0_;
   //@}
 
   /**
    * PDG code for the incoming baryons
    */
   mutable vector<int> incomingB_;
 
   /**
    * PDG code for the outgoing baryons
    */
   mutable vector<int> outgoingB_;
 
   /**
    * the maximum weight for the various modes
    */
   vector<double> maxweight_;
 
   /**
    * The couplings for the different modes.
    */
   mutable vector<InvEnergy> prefactor_;
 };
 
 }
 
 
 #endif /* HERWIG_SU3BaryonDecupletOctetPhotonDecayer_H */

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