Two-photon exchange corrections in elastic muon-proton scattering
High Energy Physics - Phenomenology
2014-07-16 v2 Nuclear Theory
Abstract
We extend the general formalism of two-photon exchange to elastic lepton-nucleon scattering by accounting for all lepton mass terms. We then perform a numerical estimate of the muon-proton scattering at low momentum transfer in view of the future MUSE experiment. For this purpose, we estimate the two-photon exchange corrections to muon-proton scattering observables by considering the contribution of the proton intermediate state, which is expected to dominate at very low momentum transfers. We find that the two-photon exchange effect to the unpolarized muon- proton scattering cross section in the MUSE kinematical region is of the order of 0.5%.
Cite
@article{arxiv.1405.1600,
title = {Two-photon exchange corrections in elastic muon-proton scattering},
author = {O. Tomalak and M. Vanderhaeghen},
journal= {arXiv preprint arXiv:1405.1600},
year = {2014}
}
Comments
13 pages, 7 figures, version published in Phys. Rev. D 90, 013006 (2014)