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arXiv · 1704.07205

$K^-$- nuclear states: Binding energies and widths

J. Hrtánková·J. Mareš
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Abstract

$K^-$ optical potentials relevant to calculations of $K^-$ nuclear quasi-bound states were developed within several chiral meson-baryon coupled-channel interaction models. The applied models yield quite different $K^-$ binding energies and widths. Then, the $K^-$ multinucleon interactions were incorporated by a phenomenological optical potential fitted recently to kaonic atom data. Though the applied $K^-$ interaction models differ significantly in the $K^-N$ subthreshold region, our self-consistent calculations of kaonic nuclei across the periodic table lead to conclusions valid quite generally. Due to $K^-$ multinucleon absorption in the nuclear medium the calculated widths of $K^-$ nuclear states are sizable, $Γ_{K^-} \geq 90$ MeV, and exceed substantially their binding energies in all considered nuclei.

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J. Hrtánková, J. Mareš. 2017-07-25. $K^-$- nuclear states: Binding energies and widths. https://doi.org/10.1103/physrevc.96.015205

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