Measurement of the total and leptonic decay widths of the $J/\psi$ resonance with an energy scan method at BESIII

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

Using $e^{+}{e}^{-}$ annihilation data sets collected with the BESIII detector, we measure the cross sections of the processes $e^{+}{e}^{-}\to e^{+}{e}^{-}$ and $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}$ at fifteen cent…