Are there any narrow $K^{-}$- nuclear states?

Abstract

We performed self-consistent calculations of $K^{-}$-nuclear quasi-bound states using a single-nucleon $K^{-}$ optical potential derived from chiral meson-baryon coupled-channel interaction models, supplemented by a phenomenological $K^{-}$ multinucleon potential introduced recently to achieve good fits to kaonic atom data [1]. Our calculations show that the effect of $K^{-}$ multinucleon interactions on $K^{-}$ widths in nuclei is decisive. The resulting widths are considerably larger than corresponding binding energies. Moreover, when the density dependence of the $K^{-}$-multinucleon interactions derived in the fits of kaonic atoms is extended to the nuclear interior, the only two models acceptable after imposing as additional constraint the single-nucleon fraction of $K^{-}$ absorption at rest do not yield any kaonic nuclear bound state in majority of considered nuclei.

14 pages, 7 figures

References in corpus (7)

• Strangeness in nuclear physics
• In-medium nuclear interactions of low-energy hadrons
• $K^{-}N$ 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
• Correlators with $s{\ell }_2$ Yangian symmetry

Cited by in corpus (8)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• $K^{-}$- nuclear states: Binding energies and widths
• 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
• Novel halos in light kaonic nuclei as an indicator of nuclear equation of state at supra-normal densities
• From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States
• Onset of $\eta$ nuclear binding
• On the widths and binding energies of $K^{-}$ nuclear states and the role of $K^{-}$ multi-nucleon interactions