Single-spin asymmetry in DVCS: fragmentation region of polarised lepton
High Energy Physics - Phenomenology
2013-05-29 v2
Abstract
For the kinematical region when a hard photon is emitted predominantly close to the direction of motion of a longitudinally polarized initial electron and relatively small momentum transfer to a proton we calculate the azimuthal asymmetry of photon emission. It arises from the interference of the Bethe-Heitler amplitude and those which are described by a heavy photon impact factor. Azimuthal asymmetry does not decrease in the limit of infinite cms energy. Lowest order expression for the impact factor of a heavy photon is presented.
Keywords
Cite
@article{arxiv.hep-ph/0012380,
title = {Single-spin asymmetry in DVCS: fragmentation region of polarised lepton},
author = {I. Akushevich and E. Kuraev and B. Shaikhatdenov},
journal= {arXiv preprint arXiv:hep-ph/0012380},
year = {2013}
}
Comments
6 pp, 1 fig, uses RevTeX package; some corrections, typos fixed