Determination of two-photon exchange amplitudes from elastic electron-proton scattering data
High Energy Physics - Phenomenology
2015-05-20 v2
Abstract
Using the available cross section and polarization data for elastic electron-proton scattering, we provide an extraction of the two-photon exchange amplitudes at a common value of four-momentum transfer, around Q^2 = 2.5 GeV^2. This analysis also predicts the e^+ p / e^- p elastic scattering cross section ratio, which will be measured by forthcoming experiments.
Keywords
Cite
@article{arxiv.1012.0564,
title = {Determination of two-photon exchange amplitudes from elastic electron-proton scattering data},
author = {Julia Guttmann and Nikolai Kivel and Mehdi Meziane and Marc Vanderhaeghen},
journal= {arXiv preprint arXiv:1012.0564},
year = {2015}
}
Comments
4 pages, 5 figures, updated error analysis