Becher, Thomas; Rauh, Thomas; Xu, Xiaofeng (2022). Two-loop anomalous dimension for the resummation of non-global observables. Journal of High Energy Physics, 2022(8) Springer 10.1007/JHEP08(2022)134
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The soft radiation emitted in jet cross sections can resolve the directions and colors of individual hard partons, leading to a complicated pattern of logarithmically enhanced terms in the perturbative series. Starting from a factorization theorem and solving the renormalization group equations for its ingredients, these large logarithms can be resummed. In this paper we extract the two-loop anomalous dimension governing the resummation of subleading logarithms in jet cross sections and other non-global observables. This anomalous dimension can be obtained by considering soft limits of hard amplitudes, but the presence of collinear singularities in intermediate expressions makes its extraction delicate. As a consistency check, we use our results to predict the known subleading non-global logarithms in the two-jet cross section.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Theoretical Physics 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Becher, Thomas, Rauh, Thomas Johannes Georg, Xu, Xiaofeng |
Subjects: |
500 Science > 530 Physics 000 Computer science, knowledge & systems |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
17 Mar 2023 15:39 |
Last Modified: |
17 Mar 2023 23:27 |
Publisher DOI: |
10.1007/JHEP08(2022)134 |
BORIS DOI: |
10.48350/179871 |
URI: |
https://boris.unibe.ch/id/eprint/179871 |
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