$(I,J^P)=(1,1\mathrm{/}{2}^{+})$ $\mathrm{\Sigma }NN$ quasibound state

JLab has recently found indications of the possible existence of a $\mathrm{\Sigma }NN$ resonance at $(3.14\pm 0.84)-i(2.28\pm 1.2)$ MeV. In the past, using models that exploit symmetries between the two-baryon sector with and without strangeness, hyperon-nucleon interactions have been derived that reproduce the experimental data of the strangeness $-1$ sector. We make use of these interactions to review existing Faddeev studies of the $\mathrm{\Lambda }NN$-$\mathrm{\Sigma }NN$ system that show theoretical evidences about a $(I,J^P)=(1,1\mathrm{/}{2}^{+})$ $\mathrm{\Sigma }NN$ quasibound state near threshold. The calculated position of the pole is at 2.92$-i$2.17 MeV, in reasonable agreement with the experimental findings.