Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data



Aaboud, M, Aad, G, Abbott, B, Abbott, DC, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL
et al (show 2929 more authors) (2019) Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data. JOURNAL OF INSTRUMENTATION, 14 (03). P03017-.

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Abstract

This paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb$^{-1}$ of LHC proton-proton collision data recorded at $\sqrt{s}=13$ TeV in 2015 and 2016. The different calibration steps applied to the data and the optimization of the reconstruction of electron and photon energies are discussed. The absolute energy scale is set using a large sample of $Z$ boson decays into electron--positron pairs. The systematic uncertainty in the energy scale calibration varies between 0.03% to 0.2% in most of the detector acceptance for electrons with transverse momentum close to 45 GeV. For electrons with transverse momentum of 10 GeV the typical uncertainty is 0.3% to 0.8% and it varies between 0.25% and 1% for photons with transverse momentum around 60 GeV. Validations of the energy calibration with $J/\psi \rightarrow e^+e^-$ decays and radiative $Z$ boson decays are also presented.

Item Type: Article
Additional Information: 61 pages in total, author list starting page 45, 18 figures, 4 tables, submitted to JINST. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2017-03
Uncontrolled Keywords: Calorimeter methods, Pattern recognition, cluster finding, calibration and fitting methods, Performance of High Energy Physics Detectors
Depositing User: Symplectic Admin
Date Deposited: 23 Apr 2019 09:11
Last Modified: 19 Jan 2023 00:53
DOI: 10.1088/1748-0221/14/03/P03017
Open Access URL: https://doi.org/10.1088/1748-0221/14/03/P03017
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3037672