March 3, 2026Open Access

Resonant states in three- and four-body hypernuclear systems

Key Points

Resonant states near the Σ-hyperon production threshold have been identified, with implications for hypernuclear study.
The positions and widths of the J π = 1 / 2 + Σ NN and J π = 0 + Σ NNN states were determined accurately.
Observational analysis using nuclear and hyperon–nucleon interactions from chiral effective field theory enhanced understanding of hypernuclear systems.
Future experiments will need to focus on the identified resonant states to further explore their properties.

Abstract

Using realistic nuclear and hyperon–nucleon interactions obtained from chiral effective field theory, we explore the possible existence of resonant states in three- and four-body strangeness S=-1 hypernuclear systems. In particular, we focus on Feshbach resonant states near the Σ-hyperon production threshold. We firmly identified J π = 1 / 2 + Σ NN as well as J π = 0 + Σ NNN states and determined their positions and widths to draw conclusions on their experimental observability.

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Cite This Study

Lazauskas et al. (Fri,) studied this question.

synapsesocial.com/papers/69a75f9bc6e9836116a2b175 https://doi.org/https://doi.org/10.1016/j.physletb.2026.140214

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