Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Rimoldi, Marco; Weston, Thomas Daniel (2019). Performance of top-quark and W-boson tagging with ATLAS in Run 2 of the LHC. The European physical journal. C, Particles and fields, 79(5) Springer 10.1140/epjc/s10052-019-6847-8
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Aaboud2019_Article_PerformanceOfTop-quarkAndVarve.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (4MB) | Preview |
The performance of identification algorithms (“taggers”) for hadronically decaying top quarks and W bosons in pp collisions at √s = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider is presented. A set of techniques based on jet shape observables are studied to determine a set of optimal cut-based taggers for use in physics analyses. The studies are extended to assess the utility of combinations of substructure observables as a multivariate tagger using boosted decision trees or deep neural networks in comparison with taggers based on two-variable combinations. In addition, for highly boosted top-quark tagging, a deep neural network based on jet constituent inputs as well as a re-optimisation of the shower deconstruction technique is presented. The performance of these taggers is studied in data collected during 2015 and 2016 corresponding to 36.1 fb−1 for the tt¯ and γ+jet and 36.7 fb−1 for the dijet event topologies.
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 > Physics Institute > Laboratory for High Energy Physics (LHEP) |
UniBE Contributor: |
Miucci, Antonio, Merlassino, Claudia, Haug, Sigve, Weber, Michele, Anders, John Kenneth, Beck, Hans Peter, Ereditato, Antonio, Rimoldi, Marco, Weston, Thomas Daniel |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1434-6044 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
16 Jun 2020 08:28 |
Last Modified: |
05 Dec 2022 15:38 |
Publisher DOI: |
10.1140/epjc/s10052-019-6847-8 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt; ATLAS collaboration |
BORIS DOI: |
10.7892/boris.143639 |
URI: |
https://boris.unibe.ch/id/eprint/143639 |
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