Luminosity determination in pp collisions at √s=13 TeV using the ATLAS detector at the LHC

Summary, in English

The 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).

• Author: G. Aad; T.P.A. Åkesson; C. Doglioni; P.A. Ekman; V. Hedberg; H. Herde; B. Konya; E. Lytken; R. Poettgen; N.D. Simpson; E. Skorda; O. Smirnova; L. Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration
• Publishing year: 2023
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 83
• Issue: 10
• Links: http://dx.doi.org/10.1140/epjc/s10052-023-11747-w
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: Tellurium compounds; A-center; Absolute luminosity; ATLAS detectors; Center-of-mass energies; Centre-of-mass energies; Data quality; Integrated luminosity; Physics data; Sensitive detector; Total uncertainties; Luminance
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044