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High precision determination of as from a global fit of jet rates
journal contribution
posted on 2023-06-09, 19:07 authored by Andrii Verbytskyi, Andrea BanfiAndrea Banfi, Adam Kardos, Pier Francesco Monni, Stefan Kluth, Gábor Somogyi, Zoltán Szor, Zoltán Trócsányi, Zoltán Tulipant, Giulia ZanderighiWe present state-of-the-art extractions of the strong coupling based on N3LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at e+e- collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the two observables. The fits are performed on a large range of data sets collected at the LEP and PETRA colliders, with energies spanning from 35 GeV to 207 GeV. Owing to the high accuracy of the predictions used, the perturbative uncertainty is considerably smaller than that due to hadronization. Our best determination at the Z mass is as (MZ) = 0.11881 ± 0.00063(exp.) ± 0.00101(hadr.) ± 0.00045(ren.) ± 0.00034(res.), which is in agreement with the latest world average and has a comparable total uncertainty.
History
Publication status
- Published
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- Published version
Journal
Journal of High Energy PhysicsISSN
1126-6708Publisher
Institute of PhysicsExternal DOI
Issue
8Volume
2019Page range
1-31Article number
a129Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-09-30First Open Access (FOA) Date
2019-09-30First Compliant Deposit (FCD) Date
2019-09-20Usage metrics
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