Are there approximate relations among transverse momentum dependent distribution functions?
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
Certain exact relations among transverse momentum dependent parton distribution functions due to QCD equations of motion turn into approximate ones upon the neglect of pure twist-3 terms. On the basis of available data from HERMES we test the practical usefulness of one such ``Wandzura-Wilczek-type approximation'', namely of that connecting h_{1L}^{\perp(1)a}(x) to h_L^a(x), and discuss how it can be further tested by future CLAS and COMPASS data.
Cite
@article{arxiv.0709.3253,
title = {Are there approximate relations among transverse momentum dependent distribution functions?},
author = {H. Avakian and A. V. Efremov and K. Goeke and A. Metz and P. Schweitzer and T. Teckentrup},
journal= {arXiv preprint arXiv:0709.3253},
year = {2008}
}
Comments
9 pages, 3 figures