In-medium Eta-Nucleon interactions and Eta nuclear bound states

Abstract

The in-medium Eta-N interaction near and below threshold is constructed from a free-space chirally-inspired meson-baryon coupled-channel model that captures the physics of the N(1535) baryon resonance. Nucleon Pauli blocking and hadron self-energies are accounted for. The resulting energy dependent in-medium interaction is used in self-consistent dynamical calculations of Eta nuclear bound states. Narrow states of width about or less than 2 MeV are found across the periodic table, beginning with A=10, for this in-medium coupled-channel interaction model. The binding energy of the 1s-Eta state increases with A, reaching a value of B(1s-Eta) about 15 MeV. The implications of our self-consistency procedure are discussed with respect to procedures used in other works.

21 pages, 1 table, 8 figures, matches published NPA version plus a new review [34] cited

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Cited by in corpus (23)

• Determination of the eta'-proton scattering length in free space
• Constraints on ${\Xi }^{-}$ nuclear interactions from capture events in emulsion
• Determination of the ${\mathbf{\eta }}^3\mathrm{He}$ threshold structure from the low energy $\mathbf{pd}\to {\mathbf{\eta }}^3\mathrm{He}$ reaction
• Onset of $\eta$-meson binding in the He isotopes
• Eta-mesic nuclei: past, present, future
• Few-body calculations of $\eta$-nuclear quasibound states
• Application of a coupled-channel Complex Scaling Method with Feshbach projection to the $K^{-}pp$ system
• Constraining the optical potential in the search for eta-mesic 4He
• Experimental constraints on the $\omega$-nucleus real potential
• $\eta$-nucleus interaction from the $d+d$ reaction around the $\eta$ production threshold
• Testing in-medium $\pi N$ dynamics on pionic atoms
• Antinucleon-nucleus interaction near threshold from the Paris $\bar{N}N$ potential
• Interaction of antiprotons with nuclei
• MESON2016 -- Concluding Remarks
• Study of the N N eta' production with COSY-11
• $\eta$ mesons in hot and dense asymmetric nuclear matter
• $K^{+}$-nucleus potentials from $K^{+}$-nucleon amplitudes
• Revisiting ${\eta }^{\prime }(958)$ nuclear states
• Probing the existence of η^3He mesic nucleus with a few-body approach
• QCD symmetries and the eta and etaprime in nuclei
• Pseudoscalar mesons from a PNJL model at zero temperature
• Dynamically generated hadronic states in the $\bar{K}N$ and $\eta N$ coupled-channels interactions
• Onset of $\eta$ nuclear binding