Balsiger, Marcel; Becher, Thomas; Shao, Dingyu (2018). Non-global logarithms in jet and isolation cone cross sections. Journal of High Energy Physics, 2018(8) Springer 10.1007/JHEP08(2018)104
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Starting from a factorization theorem in effective field theory, we derive a parton-shower equation for the resummation of non-global logarithms. We have implemented this shower and interfaced it with a tree-level event generator to obtain an automated framework to resum the leading logarithm of non-global observables in the large-Nc limit. Using this setup, we compute gap fractions for dijet processes and isolation cone cross sections relevant for photon production. We compare our results with fixed-order computations and LHC measurements. We find that naive exponentiation is often not adequate, especially when the vetoed region is small, since non-global contributions are enhanced due to their dependence on the veto-region size. Since our parton shower is derived from first principles and based on renormalization-group evolution, it is clear what ingredients will have to be included to perform resummations at subleading logarithmic accuracy in the future.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Balsiger, Marcel, Becher, Thomas, Shao, Dingyu |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
30 Aug 2018 15:39 |
Last Modified: |
05 Dec 2022 15:17 |
Publisher DOI: |
10.1007/JHEP08(2018)104 |
ArXiv ID: |
1803.07045 |
BORIS DOI: |
10.7892/boris.119658 |
URI: |
https://boris.unibe.ch/id/eprint/119658 |
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