Leeuw, LerothodiAad, GeorgesAakvaag, Erlend2026-05-122026-05-122025Aad, G., Aakvaag, E., Abbott, B. K., Abdelhameed, S., Abeling, K., Abicht, N. J., Abidi, H., Aboelela, M., Aboulhorma, A., Abramowicz, H., Abulaiti, Y., Acharya, B. S., Ackermann, A., Bourdarios, C. A., Adamczyk, L., Addepalli, S., Addison, M., Adelman, J., Adiguzel, A., . . . Aoki, M. (2025). Configuration, Performance, and Commissioning of the ATLAS b-jet Triggers for the 2022 and 2023 LHC data-taking periods. Journal of Instrumentation, 20(03), P03002. https://doi.org/10.1088/1748-0221/20/03/p03002https://doi.org/10.1088/1748-0221/20/03/P03002https://hdl.handle.net/10566/22381Abstract: 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.enParticle identification methodsTrigger detectorsn hadronic interactionscollision datasignal efficiencyArticle