Elastic πsup(+-)p scattering from 378 to 687 MeV/c

Differential cross sections for πsup(+-) p -> πsup(+-)p have been measured at Psub(π) between 378 and 687 MeV/c at 9 angles in the range -0,8 <= cos thetasub(c.m) <= 0.6. Scattered pions and recoil protons were detected in coincidence using scintillation counter hodoscopes. For almost all of the data the statistical and normalization uncertainties are each less than 2%. Our measurements are compared with existing data and the results of recent partial wave analyses. (orig.)