Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

UNSPECIFIED (2024) Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment. Journal of High Energy Physics, 2024 (5): 162. ISSN 1029-8479

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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−1. 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.

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Journal Article
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Journal of High Energy Physics
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Deposited On:
04 Jun 2024 08:55
Last Modified:
05 Jun 2024 00:59