Year: 2026
Type: preprint
Abstract: I investigate the low-energy scattering and femtoscopic correlation functions of the $d-Λ$, $d-Σ$, and $d-Ξ$ systems within a microscopic folding approach. The effective deuteron--hyperon interactions are constructed by folding the HAL-QCD hyperon--nucleon potentials with the deuteron wave function, while the spin and isospin structures are treated through Wigner-$6j$ recoupling coefficients. Using the resulting interactions, I calculate the scattering parameters and momentum correlation functions for all spin channels. No bound states are found for the $d-Λ$, $d-Σ$, or $d-Ξ$ systems. Nevertheless, the $d-Λ$ correlation exhibits a pronounced low-momentum enhancement associated with a large scattering length and a near-threshold pole, whereas the $d-Σ$ correlation is suppressed by its predominantly repulsive interaction. The neutral $d-Ξ^{0}$ system shows only a moderate enhancement, while the charged $d-Ξ^{-}$ correlation is strongly amplified by the attractive Coulomb interaction. I further investigate feed-down effects from $Σ^{0}$, $Σ(1385)$, and $Ξ$ decays using Monte Carlo response matrices and demonstrate that these decays clearly modify the observable $d-Λ$ correlation. The results provide quantitative predictions for future femtoscopic measurements and establish deuteron--hyperon correlations as a sensitive probe of hyperon--nucleus interactions.
Source: arXiv (Cornell University)
Author: Zhao, Jiaxing
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7168290950
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