Dispersion corrections to parity violating electron scattering
High Energy Physics - Phenomenology
2015-05-18 v1 Nuclear Experiment
Nuclear Theory
Abstract
We consider the dispersion correction to elastic parity violating electron-proton scattering due to \gammaZ exchange. In a recent publication, this correction was reported to be substantially larger than the previous estimates. In this paper, we study the dispersion correction in greater detail. We confirm the size of the disperion correction to be 6% for the QWEAK experiment designed to measure the proton weak charge. We enumerate parameters that have to be constrained to better than relative 30% in order to keep the theoretical uncertainty for QWEAK under control.
Keywords
Cite
@article{arxiv.1003.4300,
title = {Dispersion corrections to parity violating electron scattering},
author = {M. Gorchtein and C. J. Horowitz and M. J. Ramsey-Musolf},
journal= {arXiv preprint arXiv:1003.4300},
year = {2015}
}
Comments
6 pages, 3 figures, 2 tables; To be published in the proceedings of the VIII Latin American Symposium on Nuclear Physics and Applications, December 15-19, 2009, Santiago, Chiile