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

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Scimemi, Ignazio ; Tarasov, Andrey ; Vladimirov, Alexey
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 06 Apr 2021 13:45


We evaluate the light-cone operator product expansion for 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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