$\Xi$-deuteron low-energy $s$-wave phase shifts and momentum correlation functions in Faddeev formulation

TL;DR

This paper investigates low-energy $ ext{Xi}$-deuteron scattering using Faddeev equations with various $ ext{Xi}$-nucleon interaction models, analyzing phase shifts and momentum correlations to inform future experiments.

Contribution

It provides detailed calculations of $ ext{Xi}d$ phase shifts and momentum correlation functions using multiple interaction parametrizations, highlighting differences and experimental implications.

Findings

Significant effects of deuteron breakup in the $J=3/2$ channel.

Quantitative differences in correlation functions reflect variations in $ ext{Xi}N$ interactions.

Results can guide future experimental measurements of $ ext{Xi}d$ systems.

Abstract

The low-energy $\Xi$-deuteron scattering is investigated through the solution of Faddeev equations, employing three sets of the currently available parametrization of the $\Xi$-nucleon interactions. One of these is the chiral NLO interaction parametrized by the J\"{u}lich group, and the other two are based on the calculations by the HAL-QCD method. The $s$-wave phase shifts in the $J=3/2$ and $J=1/2$ states are presented. Three-body wave functions in coordinate space are constructed from the Faddeev amplitudes in momentum space. These functions are used in the calculation of $\Xi d$ momentum correlation functions. The effects of the deuteron breakup are significant in the $J=3/2$ channel. The differences in the magnitude of the calculated correlation function show the quantitative difference of the $\Xi N$ interactions in the spin-isospin channels. The prospective experimental data on the $\Xi d$ momentum correlation function could contribute to a better description of the $\Xi N$ interactions.