#ifndef HADRONS_ME_Library_Tensor_Decay_MEs_H #define HADRONS_ME_Library_Tensor_Decay_MEs_H #include "HADRONS++/ME_Library/HD_ME_Base.H" namespace HADRONS { class T_PP : public HD_ME_Base { public: T_PP(ATOOLS::Flavour * flavs,int n,int* indices,std::string name) : HD_ME_Base(flavs,n,indices,name) {}; void Calculate(const ATOOLS::Vec4D_Vector& momenta, bool anti=false); void SetModelParameters(GeneralModel); }; class T_VP : public HD_ME_Base { public: T_VP(ATOOLS::Flavour * flavs,int n,int* indices,std::string name) : HD_ME_Base(flavs,n,indices,name) {}; void Calculate(const ATOOLS::Vec4D_Vector& momenta, bool anti=false); void SetModelParameters(GeneralModel); }; class T_VV : public HD_ME_Base { public: T_VV(ATOOLS::Flavour * flavs,int n,int* indices,std::string name) : HD_ME_Base(flavs,n,indices,name) {}; void Calculate(const ATOOLS::Vec4D_Vector& momenta, bool anti=false); void SetModelParameters(GeneralModel); }; /*! \class T_PP \brief For decays \f$T\to\pi\pi\f$ and similar \f[ {\cal M} = g\epsilon_{\mu\nu}p_1\mu p_2^\nu \f] */ /*! \class T_VP \brief For decays \f$T\to V\pi\f$ and similar \f[ {\cal M} = g\epsilon_T^{\mu\nu}p_{P,\mu}\epsilon_{\nu\rho\sigma\kappa} p_V^\nu\epsilon_V^\rho p_P^\kappa \f] */ /*! \class T_VV \brief For decays \f$T\to VV'\f$ and similar \f[ {\cal M} = g\epsilon_T^{\mu\nu} \left(p_\mu\epsilon_\rho-p_\rho\epsilon_\mu\right) \left(p'_\nu{\epsilon'}^\rho-{p'}^\rho\epsilon'_\nu\right) -\left(\mu\leftrightarrow\nu\right) \f] */ }; #endif