Chiral SU(3) Dynamics and Antikaon-Nuclear quasibound States

Abstract

Recent developments are summarised concerning low-energy KbarN interactions as they relate to the possible existence of antikaon-nuclear quasibound states. An exploratory study of antikaons bound to finite nuclei is performed, with emphasis on the evolution of such states from light to heavy nuclei (A = 16 - 208). The energy dependent, driving attractive KbarN interactions are constructed using the s-wave coupled-channel amplitudes involving the Lambda(1405) and resulting from chiral SU(3) dynamics, plus p-wave amplitudes dominated by the Sigma(1385). Effects of Pauli and short-range correlations are discussed. The decay width induced by K^-NN two-body absorption is estimated and found to be substantial. It is concluded that Kbar-nuclear quasibound states can possibly exist with binding energies ranging from 60 to 100 MeV, but with short life times corresponding to decay widths of the similar magnitudes.

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Cited by in corpus (25)

• Strangeness in nuclear physics
• Chiral SU(3) theory of antikaon-nucleon interactions with improved threshold constraints
• Variational calculation of the ppK^- system based on chiral SU(3) dynamics
• $K^{-}pp$ system with chiral SU(3) effective interaction
• Meson-nucleus potentials and the search for meson-nucleus bound states
• Strangeness nuclear physics: a critical review on selected topics
• Nuclear Force from Monte Carlo Simulations of Lattice Quantum Chromodynamics
• Chirally motivated K^- nuclear potentials
• K^- nuclear potentials from in-medium chirally motivated models
• Constraints on ${\Xi }^{-}$ nuclear interactions from capture events in emulsion
• Kaonic atoms and in-medium K-N amplitudes II: interplay between theory and phenomenology
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• Multi-$\bar{K}$ nuclei and kaon condensation
• Anti-strange meson-baryon interaction in hot and dense nuclear matter
• Branching ratios of mesonic and nonmesonic antikaon absorptions in nuclear medium
• Antikaon interactions with nucleons and nuclei
• Multi-$\bar{K}$ hypernuclei
• Constraints on the threshold K- nuclear potential from FINUDA (stopped K-, pi-) hypernuclear spectra
• Properties of strange vector mesons in dense and hot matter
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• In-medium antikaon interactions and bound states
• $\Xi$-nuclear constraints from ${\Xi }^{-}$ emulsion capture events
• Separable potential model for meson-baryon interaction beyond the S-wave
• Antikaon-nucleus dynamics: from quasibound states to kaon condensation