Configuration, Performance, and Commissioning of the ATLAS <i>b</i>-jet Triggers for the 2022 and 2023 LHC data-taking periods

Article Article scientifique Article Configuration, Performance, and Commissioning of the ATLAS <i>b</i>-jet Triggers for the 2022 and 2023 LHC data-taking periods eng 2025-03-04 2025 author Algren Malte Geneva U. 983932 Département de physique nucléaire et corpusculaire (FINUC) author Alves Cardoso Mario Geneva U. 975873 Département de physique nucléaire et corpusculaire (FINUC) author Antel Claire Geneva U. 924199 author Axiotis Konstantinos Geneva U. 938185 author Bozianu Léon Geneva U. 402988 Département de physique nucléaire et corpusculaire (FINUC) author Cepaitis Vilius Geneva U. 983747 Département de physique nucléaire et corpusculaire (FINUC) author Clark Allan Geoffrey Geneva U. 24043 Département de physique nucléaire et corpusculaire (FINUC) author Della Volpe Domenico Geneva U. 792615 Département de physique nucléaire et corpusculaire (FINUC) author Drozdova Mariia Geneva U. 952098 Département d'informatique (DINFO) author Ehrke Lukas Geneva U. 931856 author Ferrere Didier Geneva U. 507742 Département de physique nucléaire et corpusculaire (FINUC) author Franchellucci Stefano 0000-0003-0695-0798 Geneva U. 954816 Département de physique nucléaire et corpusculaire (FINUC) author Froch Alexander Geneva U. 429855 Département de physique nucléaire et corpusculaire (FINUC) author Golling Tobias Geneva U. 827102 Département de physique nucléaire et corpusculaire (FINUC) author Gonzalez Sevilla Sergio Geneva U. 680902 Département de physique nucléaire et corpusculaire (FINUC) author Harada Daigo Geneva U. 935922 author Iacobucci Giuseppe Geneva U. 752364 Département de physique nucléaire et corpusculaire (FINUC) author Klein Samuel 0000-0002-2999-6150 Geneva U. 951964 author Kontaxakis Pantelis Geneva U. 989871 Département de physique nucléaire et corpusculaire (FINUC) author Leigh Matthew Geneva U. 951970 author Moreno Martinez Carlos Geneva U. 985623 Département de physique nucléaire et corpusculaire (FINUC) author Oleksiyuk Ivan Geneva U. 402621 Département d'informatique (DINFO) author Paolozzi Lorenzo Geneva U. 831519 Services communs de la section de physique (FICO) author Pirttikoski Antti Pietari Geneva U. 975874 Département de physique nucléaire et corpusculaire (FINUC) author Quetant Guillaume 0000-0002-2957-3449 Geneva U. 823602 Département d'informatique (DINFO) author Raine Johnny Geneva U. 898599 author Sabater Iglesias Jorge Geneva U. 971670 author Schramm Steven Geneva U. 830747 Département de physique nucléaire et corpusculaire (FINUC) author Schroeer Tomke Geneva U. 983815 Département de physique nucléaire et corpusculaire (FINUC) author Sengupta Debajyoti 0000-0003-2676-3498 Geneva U. 938067 author Sfyrla Anna Geneva U. 584693 Département de physique nucléaire et corpusculaire (FINUC) author Theiner Ondrej Geneva U. 932039 author Tian Yusong Geneva U. 424334 author Wu Xin Geneva U. 27612 Département de physique nucléaire et corpusculaire (FINUC) author Zambito Stefano Geneva U. 980555 Département de physique nucléaire et corpusculaire (FINUC) ATLAS P03002 10.1088/1748-0221/20/03/P03002 1748-0221 2501.11420 https://iopscience.iop.org/article/10.1088/1748-0221/20/03/P03002 In 2022 and 2023, the Large Hadron Collider produced approximately two billion hadronic interactions each second from bunches of protons that collide at a rate of 40 MHz. The ATLAS trigger system is used to reduce this rate to a few kHz for recording. Selections based on hadronic jets, their energy, and event topology reduce the rate to 𝒪 (10) kHz while maintaining high efficiencies for important signatures resulting in b-quarks, but to reach the desired recording rate of hundreds of Hz, additional real-time selections based on the identification of jets containing b-hadrons (b-jets) are employed to achieve low thresholds on the jet transverse momentum at the High-Level Trigger. The configuration, commissioning, and performance of the real-time ATLAS b-jet identification algorithms for the early LHC Run 3 collision data are presented. These recent developments provide substantial gains in signal efficiency for critical signatures; for the Standard Model production of Higgs boson pairs, a 50% improvement in selection efficiency is observed in final states with four b-quarks or two b-quarks and two hadronically decaying τ-leptons. Particle identification methods Trigger detectors Dewey 500.2 34 Département de physique nucléaire et corpusculaire 132 false 964 Groupe Sfyrla Journal of instrumentation 20 03 caaeca9c-f1fc-4dd6-9fd2-05f018b7ef5f Article (Published version) Public Aad_2025_J._Inst._20_P03002.pdf 2206101 application/pdf CC BY-4.0 1e3390a7f4d6d03722a68e6684d5df24d1556655b97916be2c811817b56376e1 openAccess Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

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Configuration, Performance, and Commissioning of the ATLAS b-jet Triggers for the 2022 and 2023 LHC data-taking periods	Journal of instrumentation			2025	31	16

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