QCD-Instantons and Saturation at Small x
Abstract
We briefly report on the contribution of QCD-instantons to the phenomenon of saturation in deep-inelastic scattering (DIS) at small Bjorken-x. The explicitly known instanton gauge field serves as a concrete realization of an underlying non-perturbative saturation mechanism associated with strong classical fields. Two independent strategies were pursued, with consistent results: On the one hand, an approach starting from instanton-perturbation theory was considered and on the other hand, the scattering of a Wilson loop in an instanton gauge field background. In both cases, the conspicuous, intrinsic instanton size scale <rho> ~ 0.5 fm, as known from the lattice, turns out to determine the saturation scale.
Cite
@article{arxiv.hep-ph/0301177,
title = {QCD-Instantons and Saturation at Small x},
author = {F. Schrempp and A. Utermann},
journal= {arXiv preprint arXiv:hep-ph/0301177},
year = {2017}
}
Comments
6 pages, 2 figures, presented at the Workshop on Strong and Electroweak Matter (SEWM 2002), October 2-5, 2002, Heidelberg, Germany