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

Abstract

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 annihilation production. We also report the observations of $e^{+}{e}^{-}\to \varphi \eta$ and a preliminary result on $e^{+}{e}^{-}\to {\rho }^{+}{\rho }^{-}$.

arXiv commentInvited talk, 7 pages, 4 postscript figures, contributed to the Workshop on Exclusive Reactions at High Momentum Transfer, 21-24 May 2007, Jlab