Work

Faddeev calculations of low-energy Λ -deuteron scattering and momentum correlation function

Year: 2024

Type: article

Abstract: Faddeev calculations of low-energy $\mathrm{\ensuremath{\Lambda}}$-deuteron elastic scattering are performed up to ${E}_{cm}=20$ MeV crossing the deuteron threshold. The phase shifts of the $s$ wave with $J=1/2$ and $J=3/2$ are calculated using strangeness $S=\ensuremath{-}1$ hyperon-nucleon interactions in chiral effective field theory NLO13 and NLO19 parametrized by the J\"ulich-Bonn group. The effective range parameters, specifically the scattering length and effective range, are ascertained through the calculated phase shifts. The present study evaluates the momentum correlation functions of the $\mathrm{\ensuremath{\Lambda}}$-deuteron system using the $\mathrm{\ensuremath{\Lambda}}$-deuteron relative wave function, constructed from half-off-shell $t$ matrices. The results are then compared with those obtained using an approximate formula.

Source: Physical Review C

DOI: 10.1103/physrevc.110.044005

Authors: M. Kohno, H. Kamada

Institutions: The University of Osaka, Kyushu Institute of Technology

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Awards: Xi hyperons and strangeness nuclear physics, Strangeness nuclear physics based on rigorous calculations in few-body system, Understanding of nuclei and hypernuclei based on chiral effective field theory