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

H. Garcilazo, A. Valcarce

JLab has recently found indications of the possible existence of a $\Sigma NN$ resonance at $(3.14\pm 0.84)-i(2.28\pm 1.2)$ MeV. In the past, using models that exploit symmetries be…