Analyzing power measurements forHe3(p→,p)He3elastic scattering between 20 and 50 MeV

Analyzing power data $A_y\left(\theta \right)$ have been obtained for $\overrightarrow{\mathrm{p}}+{}_{}{}^3{}_{}{}^{}\mathrm{He}$ elastic scattering at 11 energies between 21.4 and 49.6 MeV for laboratory angles between 20° and 160°. Errors typically are less than 0.01. These data are compared with fits obtained in a single energy phase-shift analysis and $R$-matrix predictions.