Exclusive pion production from 16O using polarized photons

The (γ↘,π−p) reaction was measured for 16O at photon energiesof 200 to 320 MeV, and angles ranging from about 20° to 160° for the proton and 32° to 135° for the pion. The photon asymmetry data are compared with calculations in a DWIA framework. The agreement between the present data and calculations is reasonable at quasifree kinematics, but disagree as the momentum transferto the residual nucleus becomes large.