Quantum-chromodynamic corrections to parity-violating asymmetries inepreactions at highQ2

Abstract

We examine quantum-chromodynamic (QCD) corrections to the $Q^2$ and $y$ dependence of various asymmetries in $\mathrm{ep}$ deep-inelastic scattering produced by the parity-violating weak neutral currents of the Weinberg-Salam model. We find, for $Q^2$ in the range $10\le Q^2\le {10}^4$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^2$, that a small change in the value of ${{sin}^2\theta }_W$ can mask the small (∼5-10%) QCD corrections even if data are taken over the entire range of $y$. We conclude that QCD does not produce significantly large modifications to the weak asymmetries considered for the above range of $Q^2$.