Study of the process $e^+e^- \to π^+π^-π^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV

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dc.creatorAchasov, M. N.
dc.creatorBeloborodov, K. I.
dc.creatorBerdyugin, A. V.
dc.creatorBogdanchikov, A. G.
dc.creatorBozhenok, A. V.
dc.creatorBukin, A. D.
dc.creatorBukin, D. A.
dc.creatorDimova, T. V.
dc.creatorDruzhinin, V. P.
dc.creatorGolubev, V. B.
dc.creatorKoop, I. A.
dc.creatorKorol, A. A.
dc.creatorKoshuba, S. V.
dc.creatorLysenko, A. P.
dc.creatorPakhtusova, E. V.
dc.creatorSerednyakov, S. I.
dc.creatorShary, V. V.
dc.creatorShatunov, Yu. M.
dc.creatorSilagadze, Z. K.
dc.creatorSkrinsky, A. N.
dc.creatorValishev, A. A.
dc.creatorVasiljev, A. V.
dc.date2003-05-19
dc.date.accessioned2026-07-07T10:28:19Z
dc.date.available2026-07-07T10:28:19Z
dc.descriptionThe cross section of the process $e^+e^-\to π^+π^-π^0$ was measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2M collider in the energy region $\sqrt[]{s}$ below 980 MeV. This measurement was based on about $1.2 \times 10^6$ selected events. The obtained cross section was analyzed together with the SND and DM2 data in the energy region $\sqrt[]{s}$ up to 2 GeV. The $ω$-meson parameters: $m_ω=782.79\pm 0.08\pm 0.09$ MeV, $Γ_ω=8.68\pm 0.04\pm 0.15$ MeV and $σ(ω\to 3π)=1615\pm 9\pm 57$ nb were obtained. It was found that the experimental data cannot be described by a sum of only $ω$, $ϕ$, $ω^\prime$ and $ω^{\prime\prime}$ resonances contributions. This can be interpreted as a manifestation of $ρ\to 3π$ decay, suppressed by $G$-parity, with relative probability $B(ρ\to 3π) = (1.01\pm^{0.54}_{0.36}\pm 0.034) \times 10^{-4}$.
dc.description41 pages REVTEX and 34 figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0305049
dc.identifierhttp://arxiv.org/abs/hep-ex/0305049
dc.identifierPhys.Rev.D68:052006,2003
dc.identifierdoi:10.1103/PhysRevD.68.052006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177405
dc.subjectHigh Energy Physics - Experiment
dc.titleStudy of the process $e^+e^- \to π^+π^-π^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV
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