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arxiv: 1901.04519 · v2 · submitted 2019-01-14 · ✦ hep-ph

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Collinear matching for Sivers function at next-to-leading order

Ignazio Scimemi , Andrey Tarasov , Alexey Vladimirov
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classification ✦ hep-ph
keywords functionmatchingnext-to-leadingoperatorordersiversbackground-fieldcalculation
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We evaluate the light-cone operator product expansion for the unpolarized transverse momentum dependent (TMD) operator in the background-field technique up twist-3 inclusively. The next-to-leading order (NLO) matching coefficient for the Sivers function is derived. The method, as well as many details of the calculation, are presented.

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  1. Collinear matching for leading power gluon transverse momentum distributions

    hep-ph 2026-05 unverdicted novelty 7.0

    Tree-level and one-loop collinear matching relations are computed for leading-power gluon TMD PDFs, yielding the first Wandzura-Wilczek approximation for the gluon worm-gear T distribution along with a closed-form mas...