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arXiv · 0903.4680

Collins Fragmentation and the Single Transverse Spin Asymmetry

Feng Yuan·Jian Zhou
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Abstract

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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Feng Yuan, Jian Zhou. 2009-03-26. Collins Fragmentation and the Single Transverse Spin Asymmetry. https://doi.org/10.1103/physrevlett.103.052001

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