ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2005, vol. 613, p. 29-38
Study of the ρ and ω meson decays into a pseudoscalar meson and e+e- pair with the CMD-2 detector
Using 3.3 pb-1 of data collected with the CMD-2 detector in the 720-840 MeV c.m. energy range, the branching fraction of the conversion decay ω→π0e+e- has been measured: B(ω→π0e+e-)=(8.19±0. 71±0.62)×10-4. The upper limits for the branching fractions of the following conversion decays have been obtained at the 90% confidence level: B(ρ→π0e+e -)<1.6×10-5, B(ρ→ηe +e-)<0.7×10-5 and B(ω→η e+e-)<1.1×10-5. © 2005 Elsevier B.V. All rights reserved.