The Ξ-nuclear potential constrained by recent Ξ$^{−}$ hypernuclei experiments - INSPIRE

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The Ξ-nuclear potential constrained by recent Ξ $^{−}$ hypernuclei experiments

Apr 28, 2021

8 pages

Published in:

J.Phys.G 49 (2022) 2, 025104

Published: Jan 12, 2022

e-Print:

2104.13567 [nucl-th]

DOI:

10.1088/1361-6471/ac4469

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Abstract: (IOP)

The Ξ-nuclear potential is investigated in the quark mean-field (QMF) model based on recent results on the Ξ

^{−}

+

^{14}

N () system. The experimental data on the binding energy of 1p-state Ξ

^{−}

hyperon in hypernuclei in KISO, IBUKI, E07-T011, E176-14-03-35 events are merged as MeV. With this constraint, the coupling strengths between the ω vector meson and Ξ hyperon are fixed in three QMF parameter sets. At the same time, the Ξ

^{−}

binding energy of 1s state in is predicted as MeV with the same interactions, completely consistent with the data from the KINKA and IRRAWADDY events. Finally, the Ξ-nuclear potential is calculated in the symmetric nuclear matter in the same framework. It is found to be U

_{Ξ}

= −11.96 ± 0.85 MeV at nuclear saturation density, which is important for the discussions of the role of strangeness in a neutron star.

Note:

12pages, 4 figures, 2 tables

quark mean field model
single Ξ-hypernuclei
Ξ-nuclear potential
nucleon Xi: interaction
saturation: density
star: compact
quark: mean field approximation

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Figures(4)

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