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ISSN - 00213640, EISSN - 10906487, JETP Letters, 2000, vol. 72, p. 282-285

Study of the ρ, ω, φ → ηγ → 7γ decays with an SND detector on a VEPP-2M collider

Achasov M. N., Baru S. E., Beloborodov K. I., Berdyugin A. V., Bozhenok A. V., Bogdanchikov A. G., Bukin D. A., Burdin S. V., Vasil'ev A. V., Velikzhanin Yu S., Dimova T. V., Druzhinin V. P., Dubrovin M. S., Ganyushin D. I., Gaponenko I. A., Golubev V. B., Ivanchenko V. N., Koop I. A., Korol' A. A., Koshuba S. V., Kukartsev G. A., Pakhtusova E. V., Sal'nikov A. A., Serednyakov S. I., Sharyǐ V. V., Shatunov Yu M., Sidorov V. A., Silagadze Z. K.

The e +e - → ηγ → 7γ process was studied in the energy range 2E = 600-1060 MeV with an SND detector on a VEPP-2M e +e - collider. The decay branching ratios B(φ → ηγ) = (1.353 ± 0.011 ± 0.052) × 10 -2, B(ω → ηγ) = (4.62 ± 0.71 ± 0.18) × 10 -4, and B(ρ → ηγ) = (2.73 ± 0.31 ± 0.15) × 10 -4 were measured. © 2000 MAIK "Nauka/Interperiodica".