Parity violation in proton-proton scattering at 221 MeV

TRIUMF experiment 497 has measured the parity-violating longitudinal analyzing power $A_z$ in $\overrightarrow{p}p$ elastic scattering at 221.3 MeV incident proton energy. This comprehensive paper includes details of the corrections, some of magnitude comparable to $A_z$ itself, required to arrive at the final result. The largest correction was for the effects of first moments of transverse polarization. The addition of the result, $A_z=[0.84\pm 0.29(\mathrm{stat}.\mathrm{})\pm 0.17(\mathrm{syst}.\mathrm{}\left)\right]\times {10}^{-7},$ to the $\overrightarrow{p}p$ parity-violation experimental data base greatly improves the experimental constraints on the weak meson-nucleon coupling constants $h_{\rho }^{\mathrm{pp}}$ and $h_{\omega }^{\mathrm{pp}},$ and also has implications for the interpretation of electron parity-violation experiments.