2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/182689We use two-body potentials derived from a constituent quark cluster model to analyze the bound-state problem of the $ΣNN$ system. The observables of the two-body subsystems, $NN$ and $ΣN$, are well reproduced. We do not find $ΣNN$ bound states, but there are two attractive channels with a resonance close above the three-body threshold. These channels are the $(I,J)=(1,1/2)$ and $(0,1/2)$, their quantum numbers, widths and energy ordering consistent with the recently measured strange tribaryons from the $^{4}{\rm He}(K_{\rm stopped}^{-},N)$ reactions in the KEK PS E471 experiment.16 pages, 10 figures, 4 tables. Accepted for publication in Phys. Rev. CHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentNuclear Theorytext