Analyzing power of thep→p→π+dreaction at 400 and 450 MeV

Analyzing power measurements of the pp..--> pi../sup +/d reaction have been made at proton bombarding energies of 400 and 450 MeV, over the angular range from 76--119/sup 0/ center of mass. The data at 400 MeV confirm older measurements; no previous data at 450 MeV have been reported. A comparison of these data with theoretical predictions of Niskanen reveals generally good agreement, although the data tend to exhibit slightly greater asymmetry about 90/sup 0/ than predicted by theory.