Strong and weak $CP$ tests in sequential decays of polarized ${\Sigma }^0$ hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

The $J/\psi ,\psi (3686)\to {\Sigma }^0{\bar{\Sigma }}^0$ processes and subsequent decays are studied using the world's largest $J/\psi$ and $\psi (3686)$ data samples collected with the BESIII detector. The…