Dalitz Plot Analysis of the Decay $\omega \to {\pi }^{+}{\pi }^{-}{\pi }^0$

Abstract

Using a low-background sample of $2.6\times 10^5$ $J/\psi \to \omega \eta (\omega \to {\pi }^{+}{\pi }^{-}{\pi }^0,\eta \to \gamma \gamma )$ events, about 5 times larger statistics than previous experiments, we present a Dalitz plot analysis of the decay $\omega \to {\pi }^{+}{\pi }^{-}{\pi }^0$. It is found that the Dalitz plot distribution differs from the pure $P$-wave phase space with a statistical significance of $18.9\sigma$. The parameters from the fit to data are in reasonable agreement with those without the cross-channel effect within the dispersive framework, which indicates that the cross-channel effect in $\omega \to {\pi }^{+}{\pi }^{-}{\pi }^0$ is not significant.

arXiv comment9 pages, 9 figures

References in corpus (12)

• Design and Construction of the BESIII Detector
• The Muon g-2
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Dispersive analysis of omega --> 3pi and phi --> 3pi decays
• Dispersive analysis of the pion transition form factor
• omega --> pi0 gamma* and phi --> pi0 gamma* Transition form factors in dispersion theory
• Rescattering effects in eta {\to} 3pi decays
• Reactions with pions and vector mesons in the sector of odd intrinsic parity
• Measurement of the $\omega \to {\pi }^{+}{\pi }^{-}{\pi }^0$ Dalitz plot distribution
• Study of the decay phi --> pi+pi-pi0 with the KLOE detector

Cited by in corpus (8)

• The anomalous magnetic moment of the muon in the Standard Model
• Measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ cross section from threshold to 1.2 GeV with the CMD-3 detector
• Novel approaches in Hadron Spectroscopy
• Khuri-Treiman equations for $3\pi$ decays of particles with spin
• Analysis of rescattering effects in $3\pi$ final states
• Wess-Zumino-Witten Interactions of Axions
• First measurement of polarizations in the decay $D^0\to \omega \varphi$
• Measurement of the branching fraction for $\psi (3686)\to \omega K_S^0{K}_S^0$