Two-photon exchange at low Q^2
Nuclear Theory
2008-11-26 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We study two-photon exchange for elastic electron-proton scattering at low Q^2. Compact approximate formulae for the amplitudes are obtained. Numerical calculations are done for Q^2 < 0.1 GeV^2 with several realistic form factor parameterizations, yielding similar results. They indicate that the corrections to magnetic form factor can visibly affect cross-section and proton radii. For low-Q^2 electron-neutron scattering two-photon exchange corrections are shown to be negligibly small.
Cite
@article{arxiv.nucl-th/0612104,
title = {Two-photon exchange at low Q^2},
author = {Dmitry Borisyuk and Alexander Kobushkin},
journal= {arXiv preprint arXiv:nucl-th/0612104},
year = {2008}
}
Comments
5 pages, 4 figures