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arXiv · 2001.08621

From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States

Aleš Cieplý·Jaroslava Hrtánková·Jiří Mareš·Eliahu Friedman·Avraham Gal·Àngels Ramos
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Abstract

We review the current status of our study of $K^-$-nuclear interactions and $K^-$-nuclear quasi-bound states. The adopted $K^-$-nuclear optical potential consists of two parts -- the single-nucleon one constructed microscopically from chirally motivated $\bar{K}N$ amplitudes, and a phenomenological multi-nucleon one constrained in fits to kaonic atoms data. The inclusion of multi-nucleon absorption in our calculations of $K^{-}$ quasi-bound states in many-body systems leads to huge widths, considerably exceeding the binding energies. If this feature is confirmed the observation of such states is unlikely. Finally, a development of a new microscopical model for in-medium $K^-NN$ absorption is discussed as well.

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Aleš Cieplý, Jaroslava Hrtánková, Jiří Mareš, Eliahu Friedman, Avraham Gal, Àngels Ramos. 2020-01-23. From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States. https://doi.org/10.1063/5.0008968

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