Quark intrinsic motion and the link between TMDs and PDFs in covariant approach
arXiv:0912.3380
Abstract
The relations between TMDs and PDFs are obtained from the symmetry requirement: relativistic covariance combined with rotationally symmetric parton motion in the nucleon rest frame. This requirement is applied in the covariant parton model. Using the usual PDFs as an input, we are obtaining predictions for some polarized and unpolarized TMDs.
5 pages, 3 figures, Contribution to the Proceedings of XIII Workshop on High Energy Spin Physics DSPIN-09, Dubna, Russia, September 1-5, 2009