From hyperon--nucleon interactions to deuteron--hyperon femtoscopy
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−Ξ0 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 Σ0, 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.
Related
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- Probing the Spatial Coherence of Chiral-Imbalance Fluctuations with Hyperon Spin Correlations
BibTeX
@misc{zhao2026from,
title = {{From hyperon--nucleon interactions to deuteron--hyperon femtoscopy}},
author = {Jiaxing Zhao},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2607.10722},
eprint = {2607.10722},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.10722},
note = {CC0},
}
RIS
TY - UNPB
TI - From hyperon--nucleon interactions to deuteron--hyperon femtoscopy
AU - Jiaxing Zhao
PY - 2026
DA - 2026/09/09
PB - arXiv
DO - 10.48550/arxiv.2607.10722
UR - https://arxiv.org/abs/2607.10722
AB - 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.
ER -