Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2003-05-19
Phys.Rev.D68:052006,2003
Physics
High Energy Physics
High Energy Physics - Experiment
41 pages REVTEX and 34 figures
Scientific paper
10.1103/PhysRevD.68.052006
The cross section of the process $e^+e^-\to \pi^+\pi^-\pi^0$ 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 $\omega$-meson parameters: $m_\omega=782.79\pm 0.08\pm 0.09$ MeV, $\Gamma_\omega=8.68\pm 0.04\pm 0.15$ MeV and $\sigma(\omega\to 3\pi)=1615\pm 9\pm 57$ nb were obtained. It was found that the experimental data cannot be described by a sum of only $\omega$, $\phi$, $\omega^\prime$ and $\omega^{\prime\prime}$ resonances contributions. This can be interpreted as a manifestation of $\rho\to 3\pi$ decay, suppressed by $G$-parity, with relative probability $B(\rho\to 3\pi) = (1.01\pm^{0.54}_{0.36}\pm 0.034) \times 10^{-4}$.
Achasov M. N.
Beloborodov K. I.
Berdyugin Andrei V.
Bogdanchikov A. G.
Bozhenok A. V.
No associations
LandOfFree
Study of the process $e^+e^- \to π^+π^-π^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Study of the process $e^+e^- \to π^+π^-π^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of the process $e^+e^- \to π^+π^-π^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-153912