Differential cross sections for elastic π+p scattering between 1.2 and 2.3 GeV/c

Differential cross sections for π⁺p elastic scattering in the momentum region 1.2 to 2.3 GeV/c are presented for the center-of-mass angular range 0.9>cosθ>-0.9. Typically, 50 000 events were obtained at each of 16 momenta using magnetostrictive-readout wire spark chambers to detect the particles scattered from a liquid hydrogen target. The results are compared to those of the CERN-71 phase-shift analysis. The well-known dips at t-0.7 (GeV/c)² and at u^'=-0.2 (GeV/c)² are observed. In addition, structure is seen at constant u^'=-1.3 (GeV/c)². The results of a pion attenuation study in iron are also presented.