Update of hadronic decays of $J/\psi$ and $\psi (2S)$ though virtual photons

Abstract

The hadronic decay branching ratios of $J/\psi$ and $\psi (2S)$ through virtual photons, $B(J/\psi ,\psi (2S)\to {\gamma }^{\ast }\to \text{hadrons})$, are updated by using the latest published measurements of the $R$ value and the branching ratios of $J/\psi ,\psi (2S)\to l^{+}{l}^{-}$. Their respective precision increases by about 4 and 3 times.

arXiv comment3 pages, 1 figure

References in corpus (10)

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• Hadronic Decays of J/psi(1^{3}S_{1}) and psi'(2^{3}S_{1}) Through Vitrual Photons