Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Franconi, Laura; Weston, Thomas Daniel (2019). ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at s√=13 TeV. The European physical journal. C, Particles and fields, 79(11) Springer 10.1140/epjc/s10052-019-7450-8
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Aad2019_Article_ATLASB-jetIdentificationPerfor.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (2MB) | Preview |
The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt¯ events. The topology of the t→Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb−1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy s√= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Miucci, Antonio, Merlassino, Claudia, Haug, Sigve, Weber, Michele, Anders, John Kenneth, Beck, Hans Peter, Ereditato, Antonio, Franconi, Laura, Weston, Thomas Daniel |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1434-6044 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
02 Jun 2020 13:01 |
Last Modified: |
05 Dec 2022 15:38 |
Publisher DOI: |
10.1140/epjc/s10052-019-7450-8 |
Additional Information: |
Kollaboration - Es sind nur die Berner Forschenden erwaehnt; The ATLAS collaboration |
BORIS DOI: |
10.7892/boris.143564 |
URI: |
https://boris.unibe.ch/id/eprint/143564 |
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