The chirally-odd twist-3 distribution e(x)
High Energy Physics - Phenomenology
2014-11-17 v2
Abstract
Properties of the nucleon twist-3 distribution function e(x) are reviewed. It is emphasized that the QCD equations of motion imply the existence of a delta-function at x=0 in e(x), which gives rise to the pion-nucleon sigma-term. According to the resulting ``practical'' DIS sum rules the first and the second moment of e(x) vanish, a situation analogue to that of the pure twist-3 distribution function .
Cite
@article{arxiv.hep-ph/0212044,
title = {The chirally-odd twist-3 distribution e(x)},
author = {A. V. Efremov and P. Schweitzer},
journal= {arXiv preprint arXiv:hep-ph/0212044},
year = {2014}
}
Comments
19 pages, 3 figures, new references and figures added