e^+e^- Annihilations into Quasi-two-body Final States at 10.58 GeV

K. Yi

We report the first observation of $e^{+}{e}^{-}$ annihilations into hadronic states of positive $C$-parity, ${\rho }^0{\rho }^0$ and $\varphi {\rho }^0$. The angular distributions support two-virtual-photon an…