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Article
Report number arXiv:2308.13362 ; CERN-EP-2023-182
Title Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment
Author(s) ATLAS Collaboration  显示全部 2979 名作者
Corporate Author(s) ATLAS Collaboration
Publication 2024-05-14
Imprint 25 Aug 2023
Number of pages 65
Note 61 pages in total, author list starting page 44, 20 figures, 2 tables. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EGAM-2021-01
In: JHEP 2405 (2024) 162
DOI 10.1007/JHEP05(2024)162 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords detector ; particle identification ; experimental results ; Electron and Photon efficiencies
Abstract Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data of pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 139 fb1 collected by the ATLAS experiment during the years 2015-2018. The measured electron identification efficiencies have uncertainties that are around 30%-50% smaller than the previous Run 2 results due to an improved methodology and the inclusion of more data. A better pile-up subtraction method leads to electron isolation efficiencies that are more independent of the amount of pile-up activity. Updated photon identification efficiencies are also presented, using the full Run 2 data. When compared to the previous measurement, a 30%-40% smaller uncertainty is observed on the photon identification efficiencies, thanks to the increased amount of available data.
Copyright/License Publication: © 2024-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³
Preprint: © 2023-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 记录创建於2023-08-25,最後更新在2025-01-31


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