2007/10/16 by C. Cebulla, J. Ossmann, P. Schweitzer +1 · 1 citation
Physics and Astronomy · #hep-ph
published as ActaPhys.Polon.B39:609-640,2008 · 16 pages, 9 figures
arxiv created 2007/10/16 · arxiv updated 2009/12/01
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.