Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment
Collaboration
65 pages
Published in:
- JHEP 05 (2024) 162
- Published: May 14, 2024
e-Print:
- 2308.13362 [hep-ex]
DOI:
- 10.1007/JHEP05(2024)162 (publication)
Report number:
- CERN-EP-2023-182
Experiments:
Citations per year
Abstract: (Springer)
Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data sample collected by the ATLAS experiment in pp collisions at a centre-of-mass energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb. 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.[graphic not available: see fulltext]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
- Hadron-Hadron Scattering
- p p: colliding beams
- photon: particle identification
- p p: scattering
- particle identification: efficiency
- electron: particle identification
- pile-up
- ATLAS
- CERN LHC Coll
- data analysis method
References(64)
Figures(45)
- [2]
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