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arXiv · 1307.0023

Contribution of the twist-3 fragmentation function to single transverse-spin asymmetry in SIDIS

Koichi Kanazawa·Yuji Koike
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Abstract

We study the contribution of the twist-3 fragmentation function to the single transverse-spin asymmetry in SIDIS within the framework of the collinear factorization. Using the Ward-Takahashi identity in QCD, we establish the collinear twist-3 formalism in the Feynman gauge to calculate its non-pole contribution to the asymmetry.

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Koichi Kanazawa, Yuji Koike. 2013-06-28. Contribution of the twist-3 fragmentation function to single transverse-spin asymmetry in SIDIS. https://arxiv.org/abs/1307.0023

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