HYPERONIC NUCLEAR-MATTER IN BRUECKNER THEORY

We determine in an extended Brueckner-Hartree-Fock formalism self-cons istent single-particle potentials of nucleons, lambda, and sigma hyper ons for a system consisting of symmetric nuclear matter and lambda hyp erons of uniform densities rho(N) and rho(A), respectively. The bindin g energy per baryon of this system is discussed and its maximum strang eness content preserving binding is evaluated. The results are used to introduce a hyperonic symmetry energy term in a generalized mass form ula for multistrange hypernuclei.