ISSN - 05503213, Nuclear Physics B, 2000, vol. 569, p. 158-182
Investigation of the e+e- → ωπ0 → π0π0γ reaction in the energy domain near the ø-meson
The e + e - → ωπ0 → π0π0γ process was investigated in the SND experiment at the VEPP-2M collider. A narrow energy interval near the ø-meson was scanned. The observed cross section reveals, at the level of three standard deviation, the interference effect caused by ø → π0π0γ decay. The cross-section parameters, as well as the real and imaginary parts of the ø-meson related amplitude, were measured. © 2000 Elsevier Science B.V. All rights reserved.