Analyzing powers for p 6 p elastic scattering between 87 and 263 MeV

Analyzing powers for $\ensuremath{\pi}p$ elastic scattering were measured using the CHAOS spectrometer at energies spanning the \ensuremath{\Delta}(1232) resonance. This work presents ${\ensuremath{\pi}}^{+}$ data at the pion kinetic energies 117, 130, 139, 155, 169, 180, 193, 218, 241, and 267 MeV and ${\ensuremath{\pi}}^{\ensuremath{-}}$ data at 87, 117, 193, and 241 MeV, covering an angular range of $50\ifmmode^\circ\else\textdegree\fi{}l~{\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}l~180\ifmmode^\circ\else\textdegree\fi{}$ at the higher energies and $90\ifmmode^\circ\else\textdegree\fi{}l~{\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}l~180\ifmmode^\circ\else\textdegree\fi{}$ at the lower energies. Unique features of the spectrometer acceptance were employed to reduce systematic errors. Single-energy phase shift analyses indicate the resulting ${S}_{11}$ and ${S}_{31}$ phases favor the results of the SM95 phase shift analysis over that of the older KH80 analysis.