Lorentz invariance relations and Wandzura-Wilczek approximation
High Energy Physics - Phenomenology
2010-02-10 v1
Abstract
A complete list of the so-called Lorentz invariance relations between parton distribution functions is given and some of their consequences are discussed, such as the Burkhardt-Cottingham sum rule. The violation of these relations is considered in a model independent way. It is shown that several Lorentz invariance relations are not violated in a generalized Wandzura-Wilczek approximation, indicating that numerically their violation may be small.
Keywords
Cite
@article{arxiv.0910.2567,
title = {Lorentz invariance relations and Wandzura-Wilczek approximation},
author = {T. Teckentrup and A. Metz and P. Schweitzer},
journal= {arXiv preprint arXiv:0910.2567},
year = {2010}
}
Comments
10 pages; Proceedings of the workshop "Recent Advances in Perturbative QCD and Hadronic Physics", July 20-24, 2009, at ECT*, Trento (Italy), in honor of Anatoli V. Efremov on the occasion of his 75th birthday; to appear in Mod. Phys. Lett. A