The In-Medium \barK NInteraction within a Chiral Unitary Approach

Abstract

The s- and p-wave contributions to the \barK N interaction in dense nuclear matter are obtained using a chiral unitary approach. We perform a self-consistent calculation of the \barK self-energy including Pauli blocking effects, meson self-energies modified by short-range correlations and baryon binding potentials. We find that the on-shell factorization cannot be applied to evaluate the in-medium corrections to p-wave amplitudes. Furthermore, the Λ and Σ develop a mass shift of -30 MeV at saturation density while the Σ* width increases to 80 MeV. We conclude that no deep and narrow \barK bound states could be observed.