Study of the ρ, ω, ϕηγ 7γ Decays with an SND Detector on a VEPP-2M Collider
M. N. Achasov, S. E. Baru, K. I. Beloborodov, A. V. Berdyugin, A. V. Bozhenok, A. G. Bogdanchikov, D. A. Bukin, S. V. Burdin, A. V. Vasiljev, Yu. S. Velikzhanin, T. V. Dimova, V. P. Druzhinin, M. S. Dubrovin, D. I. Ganyushin, I. A. Gaponenko, V. B. Golubev, V. N. Ivanchenko, I. A. Koop, A. A. Korol, S. V. Koshuba, G. A. Kukartsev, E. V. Pakhtusova, A. A. Salnikov, S. I. Serednyakov, V. V. Shary, Yu. M. Shatunov, V. A. Sidorov, Z. K. Silagadze
Abstract
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(ϕηγ)=(1.343 0.012 0.055)· 10-2, B(ωηγ)=(4.60 0.72 0.19)· 10-4, and B(ρηγ)=(2.69 0.32 0.16)· 10-4 were measured.
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