Differential cross sections forπ+p andπ−p elastic scattering from 378 to 687 MeV/c

Differential cross sections have been measured for ${\pi }^{+}$p and ${\pi }^{\mathrm{-}}$p elastic scattering at 378, 408, 427, 471, 509, 547, 586, 625, 657, and 687 MeV/c in the angular range -0.8<cos${\theta }_{\mathrm{c}.\mathrm{m}.\mathrm{}<0.8\mathrm{}}$. The scattered pion and recoil proton were detected in coincidence using scintillation-counter hodoscopes. A liquid-hydrogen target was used except for measurements at forward angles, in which a ${\mathrm{CH}}_2$ target was used. Statistical uncertainties in the data are typically less than 1%. Systematic uncertainties in acceptance and detection efficiency are estimated to be 1%. Absolute normalization uncertainties are 2–3 % for most of the data. The measurements are compared with previous data and with the results of recent partial-wave analyses. The data are fit with Legendre expansions from which total elastic cross sections are obtained.