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arXiv · 2504.04655

Examination of the lattice QCD-motivated strong attractive $ΩN$ potentials in the $Ω^- n p$ system

I. Filikhin·R. Ya. Kezerashvili·B. Vlahovic
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Abstract

Within the framework of the Faddeev equations in configuration space, we examine the $Ω^{-} np$ system, employing strongly attractive lattice HAL QCD and Yukawa-type meson exchange potentials for the $ΩN$ interaction. Our formalism incorporates the attractive Coulomb force between the $Ω^{-}$ and proton, treating the system as three non-identical particle pairs (the $ABC$ model). In this study, we assess the impact of the Coulomb interaction on the system and compare our results with recent $ΩNN$ ($AAC$ model) calculations obtained using various approaches. The $ABC$ model yields low-energy characteristics for the \(ΩNN\) system that differ from previous calculations. The Coulomb potential has a marginal perturbative effect on the $AAC$ system, shifting the three-body binding energy by the Coulomb energy of the two-body $BC$ subsystem, but only slightly deviating the spatial configuration from isosceles triangle symmetry. These effects are primarily driven by the strong \(ΩN\) interaction. We demonstrate that the large binding energy of the $Ω^{-} np$ system arises from the short-range behavior of the $ΩN$ potentials.

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I. Filikhin, R. Ya. Kezerashvili, B. Vlahovic. 2025-04-07. Examination of the lattice QCD-motivated strong attractive $ΩN$ potentials in the $Ω^- n p$ system. https://doi.org/10.1103/mjg8-mxtg

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