Observation of di-structures in $e^{+}{e}^{-}\to J/\psi \mathrm{X}$ at center-of-mass energies around 3.773 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +477

We report a measurement of the observed cross sections of the inclusive $J/\psi$ production in $e^{+}{e}^{-}\to J/\psi \mathrm{X}$ based on 3.21 fb${}^{-1}$ of data accumulated at energies…