Multi-$\bar{K}$ hypernuclei

Abstract

Relativistic mean field calculations of multi-$\bar{K}$ hypernuclei are performed by adding $K^{-}$ mesons to particle-stable configurations of nucleons, $\Lambda$ and $\Xi$ hyperons. For a given hypernuclear core, the calculated $\bar{K}$ separation energy $B_{\bar{K}}$ saturates with the number of $\bar{K}$ mesons for more than roughly 10 mesons, with $B_{\bar{K}}$ bounded from above by 200 MeV. The associated baryonic densities saturate at values 2-3 times nuclear-matter density within a small region where the $\bar{K}$-meson densities peak, similarly to what was found for multi-$\bar{K}$ nuclei. The calculations demonstrate that particle-stable multistrange $\{N,\Lambda ,\Xi \}$ configurations are stable against strong-interaction conversions $\Lambda \to N\bar{K}$ and $\Xi \to N\bar{K}\bar{K}$, confirming and strengthening the conclusion that kaon condensation is unlikely to occur in strong-interaction self-bound strange hadronic matter.

21 pages, 7 figures, revised figures and text

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Cited by in corpus (11)

• The nature of the Lambda(1405) resonance in chiral dynamics
• Realistic calculations of Kbar-N-N, Kbar-N-N-N, and Kbar-Kbar-N-N quasibound states
• Chirally motivated K^- nuclear potentials
• K^- nuclear potentials from in-medium chirally motivated models
• Recent studies of kaonic atoms and nuclear clusters
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• Constraints on the threshold K- nuclear potential from FINUDA (stopped K-, pi-) hypernuclear spectra
• Antikaon-nucleus dynamics: from quasibound states to kaon condensation
• Kaon-meson coupling from SU(3) flavour symmetry and application to antikaon condensed dense matter in neutron star
• Effects of the $\Lambda$(1405) on the Structure of Multi-Antikaonic Nuclei