High Precision Mass Measurements in $\Psi$ and $\Upsilon$ Families Revisited

TL;DR

This paper revisits high precision mass measurements of the $ ext{Psi}$ and $ ext{Upsilon}$ families from 1980-1984, updating results with new electron mass values and radiative corrections to improve accuracy.

Contribution

It provides revised mass measurements incorporating the latest electron mass and radiative correction updates, enhancing the precision of previous experimental results.

Findings

Updated mass values for $J/\Psi(1S)$ and $\Psi(2S)$

Corrections for electron mass and radiative effects applied

Improved accuracy of historical mass measurements

Abstract

High precision mass measurements in $\Psi$ and $\Upsilon$ 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.