Observation of $\psi (3686)\to \Xi (1530{)}^0\bar{\Xi }(1530{)}^0$ and $\Xi (1530{)}^0{\bar{\Xi }}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

Using $(448.1\pm 2.9)\times 10^6$ $\psi (3686)$ events collected with the BESIII detector and a single-baryon tagging technique, we present the first observation of the decays $ψ(3686…