Measurement of Branching Fractions of $J/\psi$ and $\psi (3686)$ decays to ${\Sigma }^{+}$ and ${\overline{\Sigma }}^{-}$

M. Ablikim, M. N. Achasov, P. Adlarson +500

Using $1310.6\times 10^6$ $J/\psi$ and $448.1\times 10^6$ $\psi (3686)$ events collected with the BESIII detector, the branching fractions of $J/\psi$ and $\psi (3686)$ decays to $Σ^{+}\overli…