High Precision Mass Measurements in $Ψ$ and $Υ$ Families Revisited

High precision mass measurements in $Ψ$ and $Υ$ 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 $J/Ψ(1S)$ and $Ψ(2S)$ mass measurements.

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