Comment on Radiative Corrections toe+e−→ψ(3105)

The salient features of the radiative corrections to the line shape of the reaction $e^{+}{e}^{-}\to \psi \mathrm{}\left(3105\right)\mathrm{}$ are described, emphasizing the importance of treating the infrared divergence to all orders. A tentative value of 5.2 keV is obtained for the partial width for the $\psi$ to decay to $e^{+}{e}^{-}$. An interesting but possibly fortuitous relation among the leptonic decay widths of the ${\rho }^0$, $\omega$, $\varphi$, and $\psi$ is noted.