Calculation of transverse momentum dependent distributions beyond the leading power

Moos, Valentin and Vladimirov, Alexey (2020) Calculation of transverse momentum dependent distributions beyond the leading power. JOURNAL OF HIGH ENERGY PHYSICS (12): 145. ISSN 1029-8479,

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Abstract

We compute the contribution of twist-2 and twist-3 parton distribution functions to the small-b expansion for transverse momentum dependent (TMD) distributions at all powers of b. The computation is done by the twist-decomposition method based on the spinor formalism for all eight quark TMD distributions. The newly computed terms are accompanied by the prefactor (M(2)b(2))(n) and represent the target-mass corrections to the resummed cross-section. For the first time, a non-trivial expression for the pretzelosity distribution is derived.

Item Type: Article
Uncontrolled Keywords: HIGHER TWIST; SPIN; QCD; OPERATORS; E+E; Perturbative QCD; Resummation
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 05 Mar 2021 07:28
Last Modified: 05 Mar 2021 07:28
URI: https://pred.uni-regensburg.de/id/eprint/43099

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