The twist-3 parton distribution function e(x) in large-Nc chiral theory
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
The chirally-odd twist-3 parton distribution function e(x) of the nucleon is studied in the large-Nc limit in the framework of the chiral quark-soliton model. It is demonstrated that in spite of properties not shared by other distribution functions, namely the appearance of a delta(x)-singularity and quadratic divergences in e(x), an equally reliable calculation is possible. Among the most remarkable results obtained in this work is the fact that the coefficient of the delta(x)-singularity can be computed exactly in this model, avoiding involved numerics. Our results complete existing studies in literature.
Cite
@article{arxiv.0710.3103,
title = {The twist-3 parton distribution function e(x) in large-Nc chiral theory},
author = {C. Cebulla and J. Ossmann and P. Schweitzer and D. Urbano},
journal= {arXiv preprint arXiv:0710.3103},
year = {2008}
}
Comments
16 pages, 9 figures