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

About 11 200 $ e^+e^- \to \omega \to \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 $\omega$ meson parameters. The following results have been obtained: $\sigma _{0}=(1457 \pm 23 \pm 19 )$ nb, $m_{\omega }=(782.71 \pm 0.07...

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Detalles Bibliográficos
Autores principales: Akhmetshin, R R, Anashkin, E V, Aulchenko, V M, Banzarov, V S, Barkov, L M, Baru, S E, Bashtovoy, N S, Bondar, A E, Bondarev, D V, Chernyak, D V, Dhawan, S K, Eidelman, S I, Fedotovich, G V, Gabyshev, N I, Grebeniuk, A A, Grigoriev, D N, Hughes, V W, Khazin, B I, Koop, I A, Kurdadze, L M, Kuzmin, A S, Logashenko, I B, Lukin, P A, Lysenko, A P, Nesterenko, I N, Okhapkin, V S, Perevedentsev, E A, Polunin, A A, Purlatz, T A, Root, N I, Ruban, A A, Ryskulov, N M, Shamov, A G, Shatunov, Yu M, Shekhtman, A I, Sher, A E, Shwartz, B A, Sidorov, V A, Skrinsky, A N, Smakhtin, V P, Snopkov, I G, Solodov, E P, Stepanov, P Yu, Sukhanov, A Yu, Thompson, J A, Titov, V M, Valishev, A A, Yudin, Yu V, Zverev, S G
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/425726
Descripción
Sumario:About 11 200 $ e^+e^- \to \omega \to \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 $\omega$ meson parameters. The following results have been obtained: $\sigma _{0}=(1457 \pm 23 \pm 19 )$ nb, $m_{\omega }=(782.71 \pm 0.07 \pm 0.04)$ MeV/c$^{2}$, $\Gamma _{\omega }=(8.68 \pm 0.23 \pm 0.10 )$ MeV, $\Gamma _{e^+e^-}\cdot$Br$(ømega \to \pi^+\pi^-\pi^0)= (0.528 \pm 0.012 \pm 0.007) \cdot 10^{-3}$ MeV.

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