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.

Performance of the ATLAS Level-1 topological trigger in Run 2 / G. Aad, B.A.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 82:1(2022 Jan 05), pp. 7.1-7.26. [10.1140/epjc/s10052-021-09807-0]

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

A. Andreazza
Membro del Collaboration Group
;
L. Carminati
Membro del Collaboration Group
;
S. D'Auria
Membro del Collaboration Group
;
L. Dell'Asta
Membro del Collaboration Group
;
M. Fanti
Membro del Collaboration Group
;
M. Lazzaroni
Membro del Collaboration Group
;
C. Meroni;D.P. Mungo
Membro del Collaboration Group
;
A. Murrone
Membro del Collaboration Group
;
L. Perini
Membro del Collaboration Group
;
F. Ragusa
Membro del Collaboration Group
;
A. Stabile
Membro del Collaboration Group
;
2022

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.
Settore ING-INF/07 - Misure Elettriche e Elettroniche
Settore FIS/01 - Fisica Sperimentale
5-gen-2022
https://link.springer.com/article/10.1140/epjc/s10052-021-09807-0
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/906719
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