Charge asymmetry in elastic scattering of massive leptons on protons
Abstract
The charge asymmetry due to higher-order QED corrections in elastic lepton-proton scattering is estimated without employing the ultrarelativistic approximation. Our calculation is performed by generalizing the soft-photon approximation approach suggested by Tsai. Corresponding loop integrals that take a form of Passarino-Veltman scalar three-point functions are calculated analytically without neglecting the mass of the lepton. Our results provide model-independent charge asymmetry predictions for scattering of unpolarized and massive leptons on proton targets. These predictions can be used in corresponding experiments to determine the contribution coming from model-dependent hard two-photon exchange processes.
Keywords
Cite
@article{arxiv.1705.00338,
title = {Charge asymmetry in elastic scattering of massive leptons on protons},
author = {O. Koshchii and A. Afanasev},
journal= {arXiv preprint arXiv:1705.00338},
year = {2017}
}
Comments
10 pages, 4 figures; minor changes, published version