Chromodynamic Lensing and Transverse Single Spin Asymmetries

Details Chromodynamic Lensing and Transverse Single Spin Asymmetries Chromodynamic Lensing and Transverse Single Spin Asymmetries

2003-02-17

arxiv.org/abs/hep-ph/0302144v1

Nucl.Phys.A735:185-199,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages

Scientific paper

10.1016/j.nuclphysa.2004.02.008

We illustrate how an axial asymmetry in impact parameter dependent parton distributions can give rise to an axial asymmetry for the transverse momentum of the leading quark in the photo-production of hadrons. The effect is related to the asymmetry originating from the Wilson-line phase factor in gauge invariant Sivers distributions. The single spin asymmetry arising from the asymmetry of the impact parameter dependent parton distributions is shown to exhibit a pure $\sin \phi$ dependence.

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