arXiv:hep-ph/0408009·v1·High Energy Physics — Phenomenology
Quark correlations and single-spin asymmetries
Matthias Burkardt (New Mexico State University)🇺🇸
Abstract
We illustrate, in a semi-classical picture, how the Wilson line phase factor in gauge invariantly defined unintegrated parton density can lead to a nonzero single-spin asymmetry (Sivers effect).
Comments: 6 pages, invited talk given at "QCD Down Under 2004", and "Continuous Advances in QCD 2004"