$0^{++}$ Resonances Observed at BES

B. S. Zou, for BES Collaboration

In last 10 years, $0^{++}$ resonances have been observed and studied at BES in many processes, such as $J/\psi \to \gamma {\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$, $\gamma {\pi }^{+}{\pi }^{-}$, $\gamma {\pi }^0{\pi }^0$, $\gamma K^{+}{K}^{-}$, $\gamma K_S{K}_S$, $\gamma \omega \varphi$, $ωπ…