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arXiv · 1112.0917

Chirally motivated $\bar{K}N$ amplitudes for in-medium applications

A. Cieply·J. Smejkal
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Abstract

A new fit of a chirally motivated coupled-channels model for meson-baryon interactions is presented including the recent SIDDHARTA data on the 1s level characteristics of kaonic hydrogen. The kaon-nucleon amplitudes generated by the model are fully consistent with our earlier studies. We argue that a sharp increase of the real part of the in-medium $K^{-}p$ amplitude at subthreshold energies provides a link between the shallow $\bar{K}$-nuclear optical potentials obtained microscopically from threshold $\bar{K}N$ interactions and the phenomenological deep ones deduced from kaonic atoms data. The impact on the $A$-dependence of the $Λ$-hypernuclear formation rates measured in reactions with stopped kaons is discussed too.

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A. Cieply, J. Smejkal. 2012-02-01. Chirally motivated $\bar{K}N$ amplitudes for in-medium applications. https://doi.org/10.1016/j.nuclphysa.2012.01.028

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