Two-photon exchange corrections to the pion form factor
Nuclear Theory
2010-02-02 v2 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We compute two-photon exchange corrections to the electromagnetic form factor of the pion, taking into account the finite size of the pion. Compared to the soft-photon approximation for the infrared divergent contribution which neglects hadron structure effects, the corrections are found to be < 1% for small Q^2 (Q^2 < 0.1 GeV^2), but increase to several percent for Q^2 > 1 GeV^2 at extreme backward angles.
Keywords
Cite
@article{arxiv.0911.3619,
title = {Two-photon exchange corrections to the pion form factor},
author = {P. G. Blunden and W. Melnitchouk and J. A. Tjon},
journal= {arXiv preprint arXiv:0911.3619},
year = {2010}
}
Comments
9 pages, 4 figures, version to appear in Phys. Rev. C