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Jet-medium interactions at NLO in a weakly-coupled quark-gluon plasma

Ghiglieri, Jacopo ; Moore, Guy D. ; Teaney, Derek (2022)
Jet-medium interactions at NLO in a weakly-coupled quark-gluon plasma.
In: Journal of High Energy Physics, 2016, 2016 (3)
doi: 10.26083/tuprints-00012820
Article, Secondary publication, Publisher's Version

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Type of entry: Secondary publication
Title: Jet-medium interactions at NLO in a weakly-coupled quark-gluon plasma
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2016
Publisher: Springer
Journal or Publication Title: Journal of High Energy Physics
Volume of the journal: 2016
Issue Number: 3
Collation: i, 56 Seiten
DOI: 10.26083/tuprints-00012820
Corresponding Links:
Origin: Secondary publication

We present an extension to next-to-leading order in the strong coupling constant g of the AMY effective kinetic approach to the energy loss of high momentum particles in the quark-gluon plasma. At leading order, the transport of jet-like particles is determined by elastic scattering with the thermal constituents, and by inelastic collinear splittings induced by the medium. We reorganize this description into collinear splittings, highmomentum-transfer scatterings, drag and diffusion, and particle conversions (momentumpreserving identity-changing processes). We show that this reorganized description remains valid to NLO in g, and compute the appropriate modifications of the drag, diffusion, particle conversion, and inelastic splitting coefficients. In addition, a new kinematic regime opens at NLO for wider-angle collinear bremsstrahlung. These semi-collinear emissions smoothly interpolate between the leading order high-momentum-transfer scatterings and collinear splittings. To organize the calculation, we introduce a set of Wilson line operators on the light-cone which determine the diffusion and identity changing coefficients, and we show how to evaluate these operators at NLO.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-128201
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 02 Mar 2022 13:18
Last Modified: 23 Feb 2023 07:04
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12820
PPN: 505223791
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