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

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, ${\Gamma }_{K^{-}}\ge 90$ MeV, and exceed substantially their binding energies in all considered nuclei.

25 pages, 24 figures

References in corpus (7)

• In-medium nuclear interactions of low-energy hadrons
• New insights into antikaon-nucleon scattering and the structure of the Lambda(1405)
• $K^{-}N$ amplitudes below threshold constrained by multinucleon absorption
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• Lambda(1405)-induced non-mesonic decay in kaonic nuclei
• Three-body antikaon-nucleon systems
• Are there any narrow $K^{-}$- nuclear states?

Cited by in corpus (6)

• First study of the two-body scattering involving charm hadrons
• K${}^{-}$ multi-nucleon absorption cross sections and branching ratios in $\Lambda$p and ${\Sigma }^0$p final states
• Single- and two-nucleon antikaon absorption in nuclear matter with chiral meson-baryon interactions
• First application of a microscopic $K^{-}NN$ absorption model in calculations of kaonic atoms
• From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States
• The $\bar{K}N$ interaction in higher partial waves