Observation of the decays ${\chi }_{cJ}\to {\Sigma }^{0}\overline{p}{K}^{+}+c.c.$ ($J=0,1,2$)

The decays ${\chi }_{cJ}\to {\Sigma }^{0}\overline{p}{K}^{+}+c.c.$ $\left(J=0,1,2\right)$ are studied via the radiative transition $\psi \left(3686\right)\to \gamma {\chi }_{cJ}$ based on a data sample of $\left(448.1±2.9\right)×1{0}^{6}$ $\psi \left(3686\right)$ events collected with the BESIII detector. The branching fractions of ${\chi }_{cJ}\to {\Sigma }^{0}\overline{p}{K}^{+}+c.c.$ $\left(J=0,1,2\right)$ are measured to be $\left(3.03±0.12±0.15\right)×1{0}^{-4}$, $\left(1.46±0.07±0.07\right)×1{0}^{-4}$, and $\left(0.91±0.06±0.05\right)×1{0}^{-4}$, respectively, where the first uncertainties are statistical and the second are systematic. In addition, no evident structure is found for excited baryon resonances on the two-body subsystems with the limited statistics.