$K^{-}$ nuclear quasi-bound states in a chirally motivated coupled-channel approach

摘要

K − nuclear optical potentials are constructed from in-medium ${bar K}N$ scattering amplitudes within a chirally motivated coupled-channel model. The strong energy and density dependence of the scattering amplitudes at and below threshold leads to K − potential depths −Re $V_{K^-}(rho_0) approx 80 -100$ MeV. Self consistent calculations of K − nuclear quasi-bound states are discussed.