On the widths and binding energies of $K^{-}$ nuclear states and the role of $K^{-}$ multi-nucleon interactions

Abstract

We report on our recent self-consistent calculations of $K^{-}$ nuclear quasi-bound states using $K^{-}$ optical potentials derived from chirally motivated meson-baryon coupled channels models [1,2]. The $K^{-}$ single-nucleon potentials were supplemented by a phenomenological $K^{-}$ multi-nucleon interaction term introduced to achieve good fits to $K^{-}$ atom data. We demonstrate a substantial impact of the $K^{-}$ multi-nucleon absorption on the widths of $K^{-}$ nuclear states. If such states ever exist in nuclear many-body systems, their widths are excessively large to allow observation.

Comments: 9 pages, 5 figures, proceedings of the EXA2017 conference, Vienna, Austria, September 11 - 15, 2017