Measurements of $J\psi$ decays into $\omega\pi^0$, $\omega\eta$, and $\omega\eta'$

Abstract

Based on $5.8 \times 10^7 J\psi$ events collected with BESII at the Beijing Electron-Positron Collider (BEPC), the decay branching fractions of $J\psi\to\omega\pi^0$, $\omega\eta$, and $\omega\eta'$ are measured using different $\eta$ and $\eta'$ decay modes. The results are higher than previous measurements. The $\omega\pi^0$ electromagnetic form factor is also obtained.