We outline the recent results on the two-loop electroweak contributions to the electron-electron scattering cross sections and asymmetries. Although the two-loop corrections are strongly suppressed relative to the one-loop corrections, they still contribute a few percent to the polarization asymmetry, and even this small contribution cannot be ignored at for ultra-precision experiments such as MOLLER planned at JLab. The NNLO calculation techniques we developed for the electron-electron scattering can be adapted for electron-proton processes, electron-positron collisions, and other low-energy experiments involving leptons.
@article{arxiv.1410.6969,
title = {Two-Loop Effects in Low-Energy Electroweak Measurements},
author = {A. Aleksejevs and S. Barkanova and V. Zykunov},
journal= {arXiv preprint arXiv:1410.6969},
year = {2014}
}