Two-photon exchange amplitudes for the elastic $ep$ scattering at Q^2=2.5 GeV^2 from the experimental data
High Energy Physics - Phenomenology
2015-03-17 v1 Nuclear Experiment
Abstract
We extract two-photon exchange amplitudes for the elastic electron-proton scattering at Q^2=2.5 GeV^2 from the unpolarized cross-section and recent polarization transfer measurements. There are three independent amplitudes, but only one of them, \delta G_M, can be determined with a reasonable accuracy(about 10%). The result is in good agreement with theoretical predictions. Rough estimates for two other amplitudes are obtained.
Keywords
Cite
@article{arxiv.1012.3746,
title = {Two-photon exchange amplitudes for the elastic $ep$ scattering at Q^2=2.5 GeV^2 from the experimental data},
author = {Dmitry Borisyuk and Alexander Kobushkin},
journal= {arXiv preprint arXiv:1012.3746},
year = {2015}
}
Comments
3 pages, 3 figures