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Calculation of the transverse parton distribution functions at next-to-next-to-leading order


Gehrmann, Thomas; Lübbert, Thomas; Yang, Li Lin (2014). Calculation of the transverse parton distribution functions at next-to-next-to-leading order. Journal of High Energy Physics:155.

Abstract

We describe the perturbative calculation of the transverse parton distribution functions in all partonic channels up to next-to-next-to-leading order based on a gauge invariant operator definition. We demonstrate the cancellation of light-cone divergences and show that universal process-independent transverse parton distribution functions can be obtained through a refactorization. Our results serve as the first explicit higher-order calculation of these functions starting from first principles, and can be used to perform next-to-next-to-next-to-leading logarithmic q T resummation for a large class of processes at hadron colliders.

Abstract

We describe the perturbative calculation of the transverse parton distribution functions in all partonic channels up to next-to-next-to-leading order based on a gauge invariant operator definition. We demonstrate the cancellation of light-cone divergences and show that universal process-independent transverse parton distribution functions can be obtained through a refactorization. Our results serve as the first explicit higher-order calculation of these functions starting from first principles, and can be used to perform next-to-next-to-next-to-leading logarithmic q T resummation for a large class of processes at hadron colliders.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:17 Feb 2015 14:29
Last Modified:23 Sep 2018 05:49
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Publisher DOI:https://doi.org/10.1007/JHEP06(2014)155

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