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

الأصل · EN

We present preliminary BaBar measurements of hadronic cross sections in e+e- annihilation using the radiative return technique. The cross sections for e+e- → pp, 3(π+π-), 2(π+π-)2π⁰, and K+K-2(π+π-) are measured. Measurements of the proton form factor and of the ratio Gₑ/Gₘ are also shown.