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R-values in Low Energy e^+e^- Annihilation

Z. G. Zhao
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Abstract

This presentation briefly summarizes the recent measurements of R-values in low energy e^+e^- annihilation. The new experiments aimed at reducing the uncertainties in R-values and performed with the upgraded Beijing Spectrometer (BESII) at Beijing Electron Positron Collider (BEPC) in Beijing and with CMD-2 and SND at VEEP-2M in Novosibirsk are reviewed and discussed.

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Z. G. Zhao. 2000-02-09. R-values in Low Energy e^+e^- Annihilation. https://doi.org/10.1142/s0217751x00001889

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