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arXiv · 2302.13320

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

Shudong Wang·Gang Li·Zhaoling Zhang·Weimin Song·Libo Liao
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Abstract

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

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Shudong Wang, Gang Li, Zhaoling Zhang, Weimin Song, Libo Liao. 2023-02-26. Update of hadronic decays of $J/\psi$ and $\psi(2S)$ though virtual photons. https://doi.org/10.1103/physrevd.107.112007

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