Two-loop splitting in double parton distributions: the colour non-singlet case
| Autor: | P. Plößl, J. R. Gaunt, Markus Diehl |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Nuclear and High Energy Physics
Particle physics splitting FOS: Physical sciences parton: distribution function Parton QC770-798 Kinematics Wilson loop Loop splitting High Energy Physics - Phenomenology (hep-ph) Nuclear and particle physics. Atomic energy. Radioactivity NLO Computations quantum chromodynamics ddc:530 Rapidity Singlet state Nuclear Experiment perturbation theory Physics parton distribution function High Energy Physics::Phenomenology higher-order: 1 Order (ring theory) color High Energy Physics - Phenomenology higher-order 1 rapidity kinematics High Energy Physics::Experiment Perturbation theory (quantum mechanics) distribution function [parton] 1 [higher-order] |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-72 (2021) Journal of high energy physics 08(8), 040 (2021). doi:10.1007/JHEP08(2021)040 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/jhep08(2021)040 |
| Popis: | Journal of high energy physics 08(8), 040 (2021). doi:10.1007/JHEP08(2021)040 At small inter-parton distances, double parton distributions receive their dominant contribution from the splitting of a single parton. We compute this mechanism at next-to-leading order in perturbation theory for all colour configurations of the observed parton pair. Rapidity divergences are handled either by using spacelike Wilson lines or by applying the �� regulator. We investigate the behaviour of the two-loop contributions in different kinematic limits, and we illustrate their impact in different channels. Published by SISSA, [Trieste] |
| Databáze: | OpenAIRE |
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