Performance of the ATLAS Level-1 topological trigger in Run 2

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Author
ATLAS Collaboration
Affiliation
Department of Physics, University of Arizona
Issue Date
2022

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Publisher
Springer Science and Business Media Deutschland GmbH
Citation
Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Abreu, H., Abulaiti, Y., Hoffman, A. C. A., Acharya, B. S., Achkar, B., Adam, L., Bourdarios, C. A., Adamczyk, L., Adamek, L., … ATLAS Collaboration. (2022). Performance of the ATLAS Level-1 topological trigger in Run 2. European Physical Journal C, 82(1).
Journal
European Physical Journal C
Rights
Copyright © CERN for the benefit of the ATLAS collaboration 2021. This article is licensed under a Creative Commons Attribution 4.0 International License.
Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract
During LHC Run 2 (2015–2018) the ATLAS Level-1 topological trigger allowed efficient data-taking by the ATLAS experiment at luminosities up to 2.1× 1034 cm- 2s- 1, which exceeds the design value by a factor of two. The system was installed in 2016 and operated in 2017 and 2018. It uses Field Programmable Gate Array processors to select interesting events by placing kinematic and angular requirements on electromagnetic clusters, jets, τ-leptons, muons and the missing transverse energy. It allowed to significantly improve the background event rejection and signal event acceptance, in particular for Higgs and B-physics processes. © 2021, The Author(s).
Note
Open access journal
ISSN
1434-6044
DOI
10.1140/epjc/s10052-021-09807-0
Version
Final published version
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Copyright © CERN for the benefit of the ATLAS collaboration 2021. This article is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as Copyright © CERN for the benefit of the ATLAS collaboration 2021. This article is licensed under a Creative Commons Attribution 4.0 International License.