Measurement of omega meson parameters in pi^+pi^-pi^0 decay mode with CMD-2

Abstract

About 11 200 e^+e^- -> omega -> pi^+pi^-pi^0 events selected in the center of mass energy range from 760 to 810 MeV were used for the measurement of the ωmeson parameters. The following results have been obtained: sigma _{0}=(1457 \pm 23 \pm 19)nb, m_ω=(782.71 \pm 0.07 \pm 0.04) MeV/c^{2}, Γ_ω=(8.68 \pm 0.23 \pm 0.10) MeV, Γ_{e^+e^-}\cdot Br (ω-> pi^+pi^-pi^0)= (0.528 \pm 0.012 \pm 0.007) \cdot 10^{-3} MeV.

8 pages, 4 figures