ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1984, vol. 144, p. 136-140
Measurement of ø-meson radiative decays at the storage ring VEPP-2M with the neutral detector
Results of the first experiments with the Neutral Detector at the electron-positron storage ring VEPP-2M are presented. Branching ratios of the ø-meson radiative decays have been measured: B(ø→ηγ)=(1.30±0.06)%, B(ø→π0γ)=(0.130±0.013)%, their accuracy being several times higher than the world average. The width ratio is Γ(ø→ηγ) Γ(ø→π0γ)=(10±1). Using the abovementioned quantities, the ω-ø mixing angle θv=(38.3±0.2)°, as well as the ratio between the effective magnetic moments of the s- and u-quarks, μs μu=(0.57±0.03) have been calculated. © 1984.