The φ→ηπ0γ decay
/ Authors
M. Achasov, T. Dimova, Dubrovin, V. Sidorov, K. Beloborodov, A. Berdyugin, I. Gaponenko, A. Bozhenok, V. Ivanchenko, S. Koshuba
and 19 more authors
A. Salnikov, Y. Shatunov, S. Baru, S. Burdin, V. Golubev, E. Pakhtusova, S. Serednyakov, A. Korol, V. Druzhinin, A. Bukin, S. Dolinsky, A. V. Vasilev, Korostelev, D. Bukin, V. Shary, E. Pyata, A. Skrinsky, A. Mamutkin, Z. Silagadze
/ Abstract
Abstract Rare radiative decay φ → ηπ 0 γ was studied with SND detector at VEPP-2M electron-positron collider and its branching ratio was measured: B ( φ → ηπ 0 γ )=(0.88±0.14±0.09)·10 −4 . Significant contribution of the a 0 (980) γ intermediate state was observed in the decay. The result is based on total integrated luminosity corresponding to 2·10 7 produced φ mesons.
Journal: Physics Letters B