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Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
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Number of Authors: 29392019 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 14, article id P03017Article in journal (Refereed) Published
Abstract [en]

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 root 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 -> e(+)e(-) decays and radiative Z boson decays are also presented.

Place, publisher, year, edition, pages
2019. Vol. 14, article id P03017
Keywords [en]
Calorimeter methods, Pattern recognition, cluster finding, calibration and fitting methods, Performance of High Energy Physics Detectors
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-168400DOI: 10.1088/1748-0221/14/03/P03017ISI: 000463330900005OAI: oai:DiVA.org:su-168400DiVA, id: diva2:1313185
Available from: 2019-05-02 Created: 2019-05-02 Last updated: 2019-05-02Bibliographically approved

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Bertoli, GabrieleBohm, ChristianCarney, Rebecca M. D.Clement, ChristopheHellman, StenJon-And, KerstinKastanas, AlexandrosMilstead, David A.Moa, TorbjörnMolander, SimonPasuwan, PatrawanShaikh, Nabila W.Silverstein, Samuel B.Sjölin, JörgenStrandberg, SaraUghetto, MichaëlValdes Santurio, EduardoWallängen, Veronica
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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