Consistent gauge invariant nucleon spin decomposition
High Energy Physics - Phenomenology
2012-04-24 v1
Abstract
We consider a non-uniqueness problem of gauge invariant nucleon spin decomposition. A gauge invariant decomposition with a generalized Coulomb constraint for the physical gluon has been constructed. The decomposition scheme is consistent with the concept of helicity in non-Abelian gauge theory. We provide an explicit representation for the gauge invariant Abelian projection which implies further separation of gluon into binding and valence parts.
Cite
@article{arxiv.1204.5030,
title = {Consistent gauge invariant nucleon spin decomposition},
author = {D. G. Pak and P. M. Zhang},
journal= {arXiv preprint arXiv:1204.5030},
year = {2012}
}
Comments
Talk given at XIV International Workshop on High Energy Physics "DSPIN-11", Dubna, Russia, September 20 - 24, 2011