Pion production by the reaction p + p → π+ + d using polarized beam and target

Up to now the reaction p + p → π+ + d has been investigated with an unpolarized target. The experimental knowledge of the differential cross section is briefly reviewed. Expressions are given for the differential cross section, using also a polarized target, and information obtained from such an experiment on production amplitudes is discussed. For proton lab. energies up to 1 GeV only pion partial s, p and d waves are supposed to be effective. The seven kinematically permissible production amplitudes can be fully determined from differential cross section measurements using polarized beam and target if only two deuteron vector polarizations without polarized target are determined in addition. Some solid angle restrictions for 'usual' dynamically polarized targets are discussed. (orig.)