Meson mass modification in strange hadronic matter

Abstract

We investigate in stable strange hadronic matter (SHM) the modification of the masses of the scalar ($\sigma$, ${\sigma }^{\ast }$) and the vector ($\omega$, $\varphi$) mesons. The baryon ground state is treated in the relativistic Hartree approximation in the nonlinear $\sigma$-$\omega$ and linear ${\sigma }^{\ast }$-$\varphi$ model. In stable SHM, the masses of all the mesons reveal considerable reduction due to large vacuum polarization contribution from the hyperons and small density dependent effects caused by larger binding.

Comments: 15 pages, Revtex, version to appear in Phys. Lett. B