Spin and orbital angular momentum in gauge theories (II): QCD and nucleon spin structure
High Energy Physics - Phenomenology
2015-06-30 v1
Abstract
Parallel to the construction of gauge invariant spin and orbital angular momentum for QED in paper (I) of this series, we present here an analogous but non-trivial solution for QCD. Explicitly gauge invariant spin and orbital angular momentum operators of quarks and gluons are obtained. This was previously thought to be an impossible task, and opens a more promising avenue towards the understanding of the nucleon spin structure.
Cite
@article{arxiv.0709.1284,
title = {Spin and orbital angular momentum in gauge theories (II): QCD and nucleon spin structure},
author = {X. S. Chen and X. F. Lü and W. M. Sun and F. Wang and T. Goldman},
journal= {arXiv preprint arXiv:0709.1284},
year = {2015}
}
Comments
3 pages, no figure; presented by F. Wang at NSTAR2007