Sivers Mechanism for Gluons

Details Sivers Mechanism for Gluons Sivers Mechanism for Gluons

2004-02-02

arxiv.org/abs/hep-ph/0402014v1

Phys.Rev. D69 (2004) 091501

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, revtex

Scientific paper

10.1103/PhysRevD.69.091501

We study T-odd gauge invariantly defined T-odd unintegrated gluon densities in QCD. The average $\perp$ momentum of the gluons in a $\perp$ polarized nucleon can be nonzero due to the Sivers mechanism. However, we find that the sum of the transverse momenta due to the Sivers mechanism from gluons and all quark flavors combined vanishes, i.e. $<{\bf k_{\perp,g}}> + \sum_q < {\bf k_{\perp,q}}> =0$.

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