Strange Hadronic Matter by The Extended Zimanyi-Moszkowski Model

A new relativistic mean-field model for baryonic matter is developed. It is constructed by modifying the Zimanyi-Moszkowski model based on the constituent quark picture of baryons and further by extending to take into account the (hidden) strange mesons. The model is applied to dense strange hadronic matter using the rather attractive YY interactions that are consistent with the Nijmegen potential model D. The most stable state has been found at the total baryon density rho_t=0.372fm^-3. The obtained binding energy E/A=-17.93MeV and strangeness fraction f_s=1.057 are lower than those obtained using the non-linear Walecka and the quark-meson coupling models, but are more consistent with the speculation by the strange quark matter with equal composition of u, d and s quarks