%0 Journal Article
%T Constrained gamma-Z interference corrections to parity-violating electron scattering
%A N. L. Hall
%A P. G. Blunden
%A W. Melnitchouk
%A A. W. Thomas
%A R. D. Young
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevD.88.013011
%X We present a comprehensive analysis of gamma-Z interference corrections to the weak charge of the proton measured in parity-violating electron scattering, including a survey of existing models and a critical analysis of their uncertainties. Constraints from parton distributions in the deep-inelastic region, together with new data on parity-violating electron scattering in the resonance region, result in significantly smaller uncertainties on the corrections compared to previous estimates. At the kinematics of the Qweak experiment, we determine the gamma-Z box correction to be ReBox^V_{gamma-Z} = (5.57 +- 0.36) x 10^{-3}. The new constraints also allow precise predictions to be made for parity-violating deep-inelastic asymmetries on the deuteron.
%U http://arxiv.org/abs/1304.7877v2