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



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Scimemi, Ignazio and Tarasov, Andrey and Vladimirov, Alexey (2019) Collinear matching for Sivers function at next-to-leading order. Journal of high energy physics (5). ISSN 1029-8479

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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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© 2019 Springer.
A.V. gratefully acknowledges V. Braun and A. Manashov for numerous stimulating discussions and help in clarifying several aspects of higher twist calculus. I.S. is supported by the Spanish MECD grant FPA2016-75654-C2-2-P. A.T. is grateful to J.W. Qiu and W. Vogelsang for valuable discussions and is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC02-98CH10886 and in part by the US DOE Transverse Momentum Dependent (TMD) Topical Theory Collaboration.

Uncontrolled Keywords:Transverse-spin asymmetries; Final-state interactions; Drell-yan; Single-spin; Momentum; Evolution; Scattering.
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:55958
Deposited On:02 Jul 2019 18:10
Last Modified:02 Jul 2019 18:10

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