Work

Three-body structure of the n n Λ system with Λ N − Σ N coupling

Year: 2014

Type: article

Abstract: The structure of the three-body $nn\ensuremath{\Lambda}$ system, which has been observed recently by the HypHI Collaboration, is investigated taking $\ensuremath{\Lambda}N$-$\ensuremath{\Sigma}N$ coupling explicitly into account. The $YN$ and $NN$ interactions employed in this work reproduce the binding energies of $_{\ensuremath{\Lambda}}^{3}\mathrm{H}$, $_{\ensuremath{\Lambda}}^{4}\mathrm{H}$, and $_{\ensuremath{\Lambda}}^{4}\mathrm{He}$. We do not find any $_{\ensuremath{\Lambda}}^{3}n$ bound state, which contradicts the interpretation of the data reported by the HypHI Collaboration.

Source: Physical Review C

DOI: 10.1103/physrevc.89.061302

Authors: E. Hiyama, S. Ohnishi, B. F. Gibson, Th. A. Rijken

Institutions: RIKEN, RIKEN Nishina Center, Tokyo Institute of Technology, Los Alamos National Laboratory, Radboud University Nijmegen

Language: Latvian

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green