Spin-transfer measurements of the πd→→p→preaction spanning the Δ resonance

The first spin-transfer observables for the {pi}{bold d}{r arrow}{bold p}{ital p} reaction have been measured at a number of energies spanning the {Delta} resonance in this system. These parameters correspond to {ital K}{sub {ital S}{ital L}} and {ital K}{sub {ital S}{ital S}} of the {ital p}{bold p}{r arrow}{bold d}{pi} reaction for incident proton energies ranging from 600 to 800 MeV. Such data can provide an important constraint on the determination of the partial-wave amplitudes describing this fundamental reaction. The discrepancies between our data, theoretical predictions, and values calculated from published partial-wave amplitudes demonstrate the need for further work in this area.