Institution: | a Departament d'Estructura i Constituents de la Matèria, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain b Department of Physics and Astronomy, State University of New York, Stony Brook, NY 11794, USA |
Abstract: | The momentum dependence of the antikaon optical potential in nuclear matter is obtained from a microscopic and self-consistent calculation using the meson-exchange Jülich
interaction. Two self-consistent schemes are discussed, which would lead to substantially different predictions for the width of
nuclear bound states. The effect of higher partial waves of the
interaction, beyond the L=0 component, is studied and found to have moderate but nonnegligible effects on the
nuclear potential at zero momentum. At momenta as large as 500 MeV/c, relevant in the analysis of heavy-ion collisions, the higher partial partial waves modify the
optical potential by nearly a factor of two. |