Studies of e+e- Collisions with a Hard Initial-State Photon at BaBar

Abstract

We present preliminary BaBar measurements of hadronic cross sections in $e^{+}{e}^{-}$ annihilation using the radiative return technique. The cross sections for $e^{+}{e}^{-}\to p\bar{p}$, $3({\pi }^{+}{\pi }^{-})$, $2({\pi }^{+}{\pi }^{-})2{\pi }^0$, and $K^{+}{K}^{-}2({\pi }^{+}{\pi }^{-})$ are measured. Measurements of the proton form factor and of the ratio $G_E/G_M$ are also shown.

4 pages, 9 postscript figues, contributed to the Proceedings of HADRON05, this version fixes additional typos