Four-body structure of neutron-rich hypernucleus $^6_{\Lambda}$H

TL;DR

This paper investigates the structure of the neutron-rich hypernucleus $^6_{\Lambda}$H using a four-body cluster model, reproducing observed properties and identifying the ground state as a resonant state.

Contribution

It introduces a four-body cluster model for $^6_{\Lambda}$H that accurately reproduces low-energy properties and predicts its ground state as a resonance.

Findings

Successfully reproduces low-energy properties of subsystems

Identifies $^6_{\Lambda}$H ground state as a resonant state

Provides detailed structure of neutron-rich hypernucleus

Abstract

The structure of heavy hyperhydrogen $^6_{\Lambda}$H is studied within the framework of a $tnn\Lambda$ four-body cluster model. Interactions among the constituent subunits are determined so as to reproduce reasonably well the observed low-energy properties of the $tn, t\Lambda$ and $tnn$ subsystems. As long as we reproduce the energy and width of $^5$H within the error bar, the ground state of $^6_{\Lambda}$H is obtained as a resonant state.