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Title

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

AuthorsATLAS Collaboration; Álvarez Piqueras, D. ; Aparisi Pozo, J. A.; Bailey, A.J.; Barranco, Laura; Cabrera, Susana ; Castillo, F.L.; Castillo Mª Victoria.; Cerda Alberich, L.; Costa, María José ; Escobar, Carlos ; Estrada, Oscar; Ferrer, Antonio ; Fiorini, L. ; Fullana, Esteban ; Fuster, Juan ; García García, Carmen ; García Navarro, José Enrique ; González de la Hoz, Santiago ; Higón, Emilio ; Jimenez Pena, Javier; Lacasta Llácer, Carlos ; Lozano Bahilo, José J.; Madaffari, Daniele; Mamuzic, Judita; Martí García, Salvador ; Melini, Davide; Miñano Moya, M.; Mitsou, Vasiliki A. ; Rodriguez Bosca, S.; Rodriguez Rodriguez, D.; Ruiz Martínez, Arantxa ; Salt, José ; Santra, A.; Sánchez Martínez, Javier ; Soldevila, Urmila ; Valero, Alberto ; Valls Ferrer, Juan Antonio ; Vos, Marcel
KeywordsCalorimeter methods
Pattern recognition, cluster finding, calibration and fitting methods
Performance of High Energy Physics Detectors
Issue DateMar-2019
PublisherIOP Publishing
CitationJournal of Instrumentation 14: 03017 (2019)
AbstractThis paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb of LHC proton-proton collision data recorded at 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/ψ → ee decays and radiative Z boson decays are also presented.
Publisher version (URL)http://dx.doi.org/10.1088/1748-0221/14/03/P03017
URIhttp://hdl.handle.net/10261/208407
DOIhttp://dx.doi.org/10.1088/1748-0221/14/03/P03017
Identifiersdoi: 10.1088/1748-0221/14/03/P03017
issn: 1748-0221
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