Forward angle photoproduction of single positive pions on hydrogen

Angular distribution measurements were made for the photoproduction of mesons ( pi /sup +/) on hydrogen at angles between 10 and 90 deg . Measurements were also made at photon energies of 660 to 900 Mev at 20 and 90 deg . In the results, the energy dependence at fixed center-of-mass angles appeared to have a maximum at lower energies than previously reported. A steeper dependence on energy of differential cross sections in the region around 700 Mev was also noted. (M.C.G.)