Search for hyperon $\Delta S=\Delta Q$ violating decay ${\Xi }^0\to {\Sigma }^{-}{e}^{+}{\nu }_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Using a data sample of $(1.0087\pm 0.0044)\times 10^{10}$ $J/\psi$ decay events collected with the BESIII detector at the center-of-mass energy of $\sqrt{s}=3.097$ GeV, we present a sea…