The $ϕ(1020)\toπ^0π^0γ$ decay

Achasov, M. N.; Baru, S. E.; Beloborodov, K. I.; Berdyugin, A. V.; Bozhenok, A. V.; Bukin, A. D.; Bukin, D. A.; Burdin, S. V.; Dimova, T. V.; Drozdetsky, A. A.; Druzhinin, V. P.; Dubrovin, M. S.; Gaponenko, I. A.; Golubev, V. B.; Ivanchenko, V. N.; Korol, A. A.; Koop, I. A.; Koshuba, S. V.; Kukartsev, G. A.; Mamutkin, A. A.; Pakhtusova, E. V.; Salnikov, A. A.; Serednyakov, S. I.; Shary, V. V.; Shatunov, Yu. M.; Sidorov, V. A.; Silagadze, Z. K.; Skrinsky, A. N.; Valishev, A. A.; Vasiljev, A. V.

The $ϕ(1020)\toπ^0π^0γ$ decay

Authors

Description

In the SND experiment at VEPP-2M $e^+e^-$ collider the $ϕ(1020)\toπ^0π^0γ$ decay was studied and its branching ratio was measured: $B(ϕ\toπ^0π^0γ)=(1.221\pm 0.098\pm0.061)\cdot10^{-4}$. It was shown, that $f_0(980)γ$ intermediate state dominates in this decay and the $f_0(980)$-meson parameters were obtained.
15 pages, 5 figure, 4 table, Submitted to Phys. Lett. B