Hyperonic nuclear matter in Brueckner theory

Abstract

We determine in an extended Brueckner-Hartree-Fock formalism self-consistent single-particle potentials of nucleons, lambda, and sigma hyperons for a system consisting of symmetric nuclear matter and lambda hyperons of uniform densities ${\ensuremath{\rho}}_{N}$ and ${\ensuremath{\rho}}_{\ensuremath{\Lambda}},$ respectively. The binding energy per baryon of this system is discussed and its maximum strangeness content preserving binding is evaluated. The results are used to introduce a hyperonic symmetry energy term in a generalized mass formula for multistrange hypernuclei.