The polarized TMDs in the covariant parton model approach

Abstract

We derive relations between polarized transverse momentum dependent distribution functions (TMDs) and the usual parton distribution functions (PDFs) in the 3D covariant parton model, which follow from Lorentz invariance and the assumption of a rotationally symmetric distribution of parton momenta in the nucleon rest frame. Using the known PDF $g_1^q(x)$ as input we predict the $x$- and ${\mathbf{p}}_T$-dependence of all polarized twist-2 naively time-reversal even (T-even) TMDs.

6 pages, 2 figures, Contribution to the Proceedings of the 19th International Spin Physics Symposium (SPIN2010), Jülich, Germany, September 27 - October 2, 2010

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• Single/Double-Spin Asymmetry Measurements of Semi-Inclusive Pion Electroproduction on a Transversely Polarized 3He Target through Deep Inelastic Scattering
• Nucleon spin structure functions, considering target mass correction and higher twist effects at the NNLO accuracy and their transverse momentum dependence