Measurements of the Meson-Photon Transition Form Factors of Light Pseudoscalar Mesons at Large Momentum Transfer

Using the CLEO II detector, we have measured the differential cross sections for exclusive two-photon production of light pseudoscalar mesons $\piz$, $\etaz$, and $\etap$. From our measurements we have obtained the form factors associated with the electromagnetic transitions $\gamma^*\gamma \ra$ meson. We have measured these form factors in the momentum transfer ranges from 1.5 to 9, 20, and 30 $\gevt$ for $\piz$, $\etaz$, and $\etap$, respectively, and have made comparisons to various theoretical predictions.