Exclusive electroproduction revisited: treating kinematical effects
High Energy Physics - Phenomenology
2014-11-21 v1
Abstract
Generalized parton distributions of the nucleon are accessed via exclusive leptoproduction of the real photon. While earlier analytical considerations of phenomenological observables were restricted to twist-three accuracy, i.e., taking into account only terms suppressed by a single power of the hard scale, in the present study we revisit this differential cross section within the helicity formalism and restore power-suppressed effects stemming from the process kinematics exactly. We restrict ourselves to the phenomenologically important case of lepton scattering off a longitudinally polarized nucleon, where the photon flips its helicity at most by one unit.
Cite
@article{arxiv.1005.5209,
title = {Exclusive electroproduction revisited: treating kinematical effects},
author = {A. V. Belitsky and D. Mueller},
journal= {arXiv preprint arXiv:1005.5209},
year = {2014}
}
Comments
22 pages, 1 figure