High precision mass measurements in Ψ and Υ families revisited

High precision mass measurements in Psi and gamma families performed in 1980-1984 at the VEPP-4 collider with OLYA and MD-1 detectors are revisited. The corrections for the new value of the electron mass are presented. The effect of the updated radiative corrections has been calculated for the J/Psi(1S) and Psi(2S) mass measurements. (C) 2000 Published by Elsevier Science B.V. All rights reserved.