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Chiral dynamics in systems with strangeness

E. Oset·D. Jido·J. Palomar·A. Ramos·C. Bennhold·S. Kamalov
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Abstract

In this talk a brief review of several problems involving systems with strangeness is made. In the first place one shows how the $Λ(1405)$, $Λ(1670)$ and $Σ(1620)$ states, for $S = -1$, and the $Ξ(1620)$ for $S= -2$ are generated dynamically in the context of unitarized chiral perturbation theory. The results for the $\bar{K}N$ interaction are then used to evaluate the $K^- d$ scattering length. Results obtained for the kaon selfenergy in a nuclear medium within this approach, with application to $K^-$ atoms, are also mentioned. Finally a few words are said about recent developments in the weak decay of $Λ$ hypernuclei and the puzzle of the $Γ_n/Γ_p$ ratio.

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E. Oset, D. Jido, J. Palomar, A. Ramos, C. Bennhold, S. Kamalov. 2002-10-25. Chiral dynamics in systems with strangeness. https://arxiv.org/abs/nucl-th/0210077

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