Lorentz invariance relations among parton distributions revisited
High Energy Physics - Phenomenology
2009-11-10 v2
Abstract
We revisit the derivation of the so-called Lorentz invariance relations between parton distributions. In the most important cases these relations involve twist-3 and transverse momentum dependent parton distributions. It is shown that these relations are violated if the path-ordered exponential is taken into account in the quark correlator.
Keywords
Cite
@article{arxiv.hep-ph/0302028,
title = {Lorentz invariance relations among parton distributions revisited},
author = {K. Goeke and A. Metz and P. V. Pobylitsa and M. V. Polyakov},
journal= {arXiv preprint arXiv:hep-ph/0302028},
year = {2009}
}
Comments
4 pages, minor changes, to appear in Phys. Lett. B