+ e − pair with the CMD - 2 detector
نویسنده
چکیده
Using 3.3 pb of data collected with the CMD-2 detector in the 720 – 840 MeV c.m. energy range, the branching fraction of the conversion decay ω → πee has been measured: B(ω → πee) = (8.19 ± 0.71± 0.62) · 10. The upper limits for the branching fractions of the following conversion decays have been obtained at the 90% confidence level: B(ρ → πee) < 1.6 · 10, B(ρ → ηee) < 0.7 · 10 and B(ω → ηee) < 1.1 · 10. 1 deceased Preprint submitted to Elsevier Science 7 February 2008
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