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 // -*- C++ -*-
 #ifndef HERWIG_SU3BaryonDecupletOctetScalarDecayer_H
 #define HERWIG_SU3BaryonDecupletOctetScalarDecayer_H
 //
 // This is the declaration of the SU3BaryonDecupletOctetScalarDecayer class.
 //
 #include "Baryon1MesonDecayerBase.h"
 
 namespace Herwig {
 using namespace ThePEG;
 
 /** \ingroup Decay
  *
  *  The <code>SU3BaryonDecupletOctetScalarDecayer</code> class is designed for the
  *  decay of a \f$SU(3)\f$ deculpet baryon to an octet baryon and a pseudoscalar meson
  *  from the lightest multiplet.
  *
  *  The coupling is taken to have the form
  *  \f[\frac{C}{f_\pi}\left[
  *  \bar{\Delta}^{\mu,abc}p_{\phi,\mu}\phi^i_aB^j_b\epsilon_{cij}
  * -\bar{B}^b_ip_{\phi,\mu}\phi^a_j\Delta^\mu_{abc}\epsilon^{cij}
  *  \right],\f]
  *  where \f$\Delta^\mu_{abc}\f$ is the decuplet field, \f$B^j_b\f$
  *  is the octet field and
  *  \f$\phi^i_a\f$ is the pseudoscalar field, \f$f_\pi\f$ is the pion decay constant
  *  and \f$C\f$ is the coupling for the decay.
  *
  *  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 SU3BaryonDecupletOctetScalarDecayer: public Baryon1MesonDecayerBase {
 
 public:
 
   /**
    * Default constructor.
    */
   SU3BaryonDecupletOctetScalarDecayer();
 
   /**
    * 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 scalar.
    * @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 A The coupling \f$A\f$ described above.
    * @param B The coupling \f$B\f$ described above.
    */
   virtual void threeHalfHalfScalarCoupling(int imode,Energy m0,Energy m1,Energy m2,
                        Complex& A,Complex& B) 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.
    */
   SU3BaryonDecupletOctetScalarDecayer & 
   operator=(const SU3BaryonDecupletOctetScalarDecayer &) = delete;
 
 private:
 
   /**
    * Set-up the modes
    */
   void setupModes(unsigned int) const;
 
 private:
 
   /**
    * the coupling
    */
   double _c;
 
   /**
    * the relative parities of the two baryon multiplets
    */
   bool _parity;
 
   /**
    * the pion decay constant
    */
   Energy _fpi;
 
   /**
    * PDG codes for the various octet baryons
    */
   //@{
   /**
    *  The PDG code for the \f$p\f$-like member of the outgoing octet.
    */
   long _proton;
 
   /**
    *  The PDG code for the \f$n\f$-like member of the outgoing octet.
    */
   long _neutron;
 
   /**
    *  The PDG code for the \f$\Sigma^0\f$-like member of the outgoing octet.
    */
   long _sigma0;
 
   /**
    *  The PDG code for the  \f$\Sigma^+\f$-like member of the outgoing octet.
    */
   long _sigmap;
 
   /**
    *  The PDG code for the  \f$\Sigma^-\f$-like member of the outgoing octet.
    */
   long _sigmam;
 
   /**
    *  The PDG code for the \f$\Sigma^0\f$-like member of the outgoing octet.
    */
   long _lambda;
 
   /**
    *  The PDG code for the \f$\Xi^0\f$-like member of the outgoing octet.
    */
   long _xi0;
 
   /**
    *  The PDG code for the \f$\Xi^-\f$-like member of the outgoing octet.
    */
   long _xim;
   //@}
 
   /**
    * PDG codes for the various decuplet baryons
    */
   //@{
   /**
    *  The PDG code for the \f$\Delta^{++}\f$-like member of the incoming decuplet.
    */
   long _deltapp;
 
   /**
    *  The PDG code for the \f$\Delta^{+}\f$-like member of the incoming decuplet.
    */
   long _deltap;
 
   /**
    *  The PDG code for the \f$\Delta^{0}\f$-like member of the incoming decuplet.
    */
   long _delta0;
 
   /**
    *  The PDG code for the \f$\Delta^{-}\f$-like member of the incoming decuplet.
    */
   long _deltam;
 
   /**
    *  The PDG code for the \f$\Sigma^{*+}\f$-like member of the incoming decuplet.
    */
   long _sigmasp;
 
   /**
    *  The PDG code for the \f$\Sigma^{*0}\f$-like member of the incoming decuplet.
    */
   long _sigmas0;
 
   /**
    *  The PDG code for the \f$\Sigma^{*-}\f$-like member of the incoming decuplet.
    */
   long _sigmasm;
 
   /**
    *  The PDG code for the \f$\Omega^-\f$-like member of the incoming decuplet.
    */
   long _omega;
 
   /**
    *  The PDG code for the \f$\Xi^{*-}\f$-like member of the incoming decuplet.
    */
   long _xism;
 
   /**
    *  The PDG code for the \f$\Xi^{*0}\f$-like member of the incoming decuplet.
    */
   long _xis0;
   //@}
 
   /**
    * PDG code for the incoming baryons
    */
   mutable vector<long> _incomingB;
 
   /**
    * PDG code for the outgoing baryons
    */
   mutable vector<long> _outgoingB;
 
   /**
    * PDG code for the outgoing mesons
    */
   mutable vector<long> _outgoingM;
 
   /**
    * the maximum weight for the various modes
    */
   vector<double> _maxweight;
 
   /**
    * The couplings for the different modes
    */
   mutable vector<InvEnergy> _prefactor;
 
 };
 
 }
 
 
 #endif /* HERWIG_SU3BaryonDecupletOctetScalarDecayer_H */

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