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ISSN - 01709739, Zeitschrift f�r Physik C-Particles and Fields, 1989, vol. 42, p. 511-518

Radiative decays of ρ and ω mesons

Dolinsky S. I., Druzhinin V. P., Dubrovin M. S., Golubev V. B., Ivanchenko V. N., Lysenko A. P., Mikhailichenko A. A., Pakhtusova E. V., Peryshkin A. N., Serednyakov S. I., Shatunov Yu M., Sidorov V. A.

The results of the measurements of radiative decays of ρ and ω mesons with the Neutral Detector at the e+e- collider VEPP-2M are presented. The branching ratio of the decay ω→π0γ was measured with higher than in previous experiments accuracy: {Mathematical expression}. The ρ0→π0γ branching ratio was measured for the first time: {Mathematical expression}. The decays ρ, ω→ηγ were studied. Their branching ratios with the assumption of constructive ρ-ω interference are: {Mathematical expression}. The branching ratios of ρ, ω→ηγ and ω→e+e- decays were also measured: {Mathematical expression}. The upper limit for the ω→π0π0γ branching ratio was placed: B(ω→π0π0γ)<4·10-4 at 90% confidence level. © 1989 Springer-Verlag.