New experimental data for the decays f → μ+μ− and f → π+π− from SND detector
/ Authors
M. Achasov, V. Aulchenko, K. Beloborodov, A. Berdyugin, A. Bozhenok, D. Bukin, S. Burdin, T. Dimova, S. Dolinsky, A. Drozdetsky
and 22 more authors
V. Druzhinin, M. Dubrovin, I. Gaponenko, V. Golubev, V. Ivanchenko, P. Ivanov, A. Korol, S. Koshuba, G. Kukartsev, I. Nesterenko, A. Otboev, E. Pakhtusova, V. Popov, A. Salnikov, S. Serednyakov, V. Shary, Y. Shatunov, V. Sidorov, Z. Silagadze, Y. Usov, A. Vasiljev, A. S. Zakharov
/ Abstract
Abstract The processes e + e − → μ + μ − and e + e − → π + π − have been studied with SND detector at VEPP-2M e + e − collider in the vicinity of f(1020) resonance. The branching ratios B ( f → μ + μ − ) = (3.30±0.45±0.32) × 10 −4 and B ( f → π + π − ) = (0.71±0.11±0.09) × 10 −4 were obtained.
Journal: Nuclear Physics