π±andπ0Production by Polarized Photons in the Resonance Region

Abstract

We have measured the cross sections at 90° c.m. for ${\pi }^{\pm }$ and ${\pi }^0$ photoproduction with polarized photons. The photon energies ranged from 0.8 to 2.2 GeV. We compare the resonant "bumps" in the cross section with theoretical models. The measured asymmetry agrees with a quark-model calculation though the predicted cross sections are low.