Collins Fragmentation and the Single Transverse Spin Asymmetry

Details Collins Fragmentation and the Single Transverse Spin Asymmetry Collins Fragmentation and the Single Transverse Spin Asymmetry

2009-03-26

arxiv.org/abs/0903.4680v1

Phys.Rev.Lett.103:052001,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.103.052001

We study the Collins mechanism for the single transverse spin asymmetry in the collinear factorization approach. The correspondent twist-three fragmentation function is identified. We show that the Collins function calculated in this approach is universal. We further examine its contribution to the single transverse spin asymmetry of semi-inclusive hadron production in deep inelastic scattering and demonstrate that the transverse momentum dependent and twist-three collinear approaches are consistent in the intermediate transverse momentum region where both apply.

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