Study of the ρ, ω, ϕ→ηγ→7γ decays with an SND detector on a VEPP-2M collider
/ Authors
M. Achasov, S. Baru, K. Beloborodov, A. Berdyugin, A. Bozhenok, A. Bogdanchikov, D. Bukin, S. Burdin, A. Vasil’ev, Y. Velikzhanin
and 18 more authors
T. Dimova, V. Druzhinin, M. Dubrovin, D. I. Ganyushin, I. Gaponenko, V. Golubev, V. Ivanchenko, I. Koop, A. Korol, S. Koshuba, G. Kukartsev, E. Pakhtusova, A. Salnikov, S. Serednyakov, V. V. Sharyi, Y. Shatunov, V. Sidorov, Z. 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(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.
Journal: Journal of Experimental and Theoretical Physics Letters
DOI: 10.1134/1.1328437