Higher Twist Distribution Amplitudes of the Nucleon in QCD
High Energy Physics - Phenomenology
2016-09-06 v2
Abstract
We present the first systematic study of higher-twist light-cone distribution amplitudes of the nucleon in QCD. We find that the valence three-quark state is described at small transverse separations by eight independent distribution amplitudes. One of them is leading twist-3, three distributions are twist-4 and twist-5, respectively, and one is twist-6. A complete set of distribution amplitudes is constructed, which satisfies equations of motion and constraints that follow from conformal expansion. Nonperturbative input parameters are estimated from QCD sum rules.
Cite
@article{arxiv.hep-ph/0007279,
title = {Higher Twist Distribution Amplitudes of the Nucleon in QCD},
author = {V. Braun and R. J. Fries and N. Mahnke and E. Stein},
journal= {arXiv preprint arXiv:hep-ph/0007279},
year = {2016}
}
Comments
29 pages, 4 figures, eqn in (3.19) corrected, table 3 accordingly changed, some typos fixed