Pion-proton differential scattering cross sections have been measured at 220±{}7 Mev. Measurements were made at eight angles using scintillation counters and a liquid hydrogen target. Statistical errors range from 5 to 10%. Phase shift analyses have been made of the data in the customary manner. No evidence for d-wave scattering has been found.
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Ashkin et al. (1957) studied this question.
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