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.

References in corpus (11)

• In-medium nuclear interactions of low-energy hadrons
• Effective Kbar N interaction based on chiral SU(3) dynamics
• Faddeev calculation of a $K^{-}pp$ quasi-bound state
• K^- p scattering length from scattering experiments
• Strange dibaryon resonance in the anti-KNN--piYN system
• $\bar{K}NN$ quasi-bound state and the $\bar{K}N$ interaction: coupled-channel Faddeev calculations of the $\bar{K}NN-\pi \Sigma N$ system
• The basic K nuclear cluster K- pp and its enhanced formation in the p + p -> K+ + X reaction
• $K^{-}pp$ system with chiral SU(3) effective interaction
• $\bar{K}$ nuclear bound states in a dynamical model
• Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction
• Study of light kaonic nuclei with a Chiral SU(3) - based KbarN interaction

Cited by in corpus (11)

• 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
• 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
• Multi-$\bar{K}$ hypernuclei
• Constraints on the threshold K- nuclear potential from FINUDA (stopped K-, pi-) hypernuclear spectra
• Separable potential model for meson-baryon interaction beyond the S-wave