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arXiv · 1306.1337

Reaction $e^+e^-\to\bar DD$ and $\psi'$ mesons

A. Limphirat·W. Sreethawong·K. Khosonthongkee·Y. Yan
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Abstract

We study the reaction $e^+e^-\to\bar DD$ near threshold in the $^3P_0$ non-relativistic quark model, including as intermediate states the $J/\psi$, $\psi(2S)$, $\psi(3770)$ and $\psi(4040)$ mesons. The work reveals that experimental data strongly favor one of the two $\psi(2S)-\psi(3770)$ mixing angles derived by fitting to the $e^-e^+$ partial decay widths of the $\psi(2S)$ and $\psi(3770)$ mesons. The meson $X(3940)$ as well as the resonance around 3.9 GeV observed by Belle and BaBar Collaborations in the reaction $e^+e^-\rightarrow \bar DD$ is unlikely to be a $c\bar c$ $I^G(J^{PC})=0^-(1^{--})$ state.

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A. Limphirat, W. Sreethawong, K. Khosonthongkee, Y. Yan. 2013-06-06. Reaction $e^+e^-\to\bar DD$ and $\psi'$ mesons. https://doi.org/10.1103/physrevd.89.054030

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