Beam normal spin asymmetry in elastic lepton-nucleon scattering
High Energy Physics - Phenomenology
2014-11-17 v1
Abstract
We discuss the two-photon exchange contribution to observables which involve lepton helicity flip in elastic lepton-nucleon scattering. This contribution is accessed through the spin asymmetry for a lepton beam polarized normal to the scattering plane. We estimate this beam normal spin asymmetry at large momentum transfer using a parton model and we express the corresponding amplitude in terms of generalized parton distributions.
Cite
@article{arxiv.hep-ph/0404206,
title = {Beam normal spin asymmetry in elastic lepton-nucleon scattering},
author = {M. Gorchtein and P. A. M. Guichon and M. Vanderhaeghen},
journal= {arXiv preprint arXiv:hep-ph/0404206},
year = {2014}
}
Comments
17 pages, 5 figures