Aad, G.Abbott, B.Abeling, K.Abidi, S.H.Aboulhorma, A.Abramowicz, H.Çetin, Serkant Ali2024-05-192024-05-1920231434-6044https://doi.org/10.1140/epjc/s10052-023-11747-whttps://hdl.handle.net/20.500.12713/4541The luminosity determination for the ATLAS detector at the LHC during Run 2 is presented, with pp collisions at a centre-of-mass energy s=13 TeV. The absolute luminosity scale is determined using van der Meer beam separation scans during dedicated running periods in each year, and extrapolated to the physics data-taking regime using complementary measurements from several luminosity-sensitive detectors. The total uncertainties in the integrated luminosity for each individual year of data-taking range from 0.9% to 1.1%, and are partially correlated between years. After standard data-quality selections, the full Run 2 pp data sample corresponds to an integrated luminosity of 140.1 ± 1.2 fb - 1 , i.e. an uncertainty of 0.83%. A dedicated sample of low-pileup data recorded in 2017–2018 for precision Standard Model physics measurements is analysed separately, and has an integrated luminosity of 338.1 ± 3.1 pb - 1 . © 2023, The Author(s).eninfo:eu-repo/semantics/openAccessTellurium CompoundsA-CenterAbsolute LuminosityAtlas DetectorsCenter-Of-Mass EnergiesCentre-Of-Mass EnergiesData QualityIntegrated LuminosityPhysics DataSensitive DetectorTotal UncertaintiesLuminanceArticle83102-s2.0-8517587428910.1140/epjc/s10052-023-11747-wN/A