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

0520486 - FZÚ 2020 RIV GB eng J - Článek v odborném periodiku
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … celkem 2939 autorů
Electron and photon energy calibration with the ATLAS detector using 2015–2016 LHC proton-proton collision data.
Journal of Instrumentation. Roč. 14, č. 3 (2019), s. 1-61, č. článku P03017. ISSN 1748-0221. E-ISSN 1748-0221
Grant CEP: GA MŠMT LM2015058
Institucionální podpora: RVO:68378271
Klíčová slova: CERN LHC Coll * ATLAS * acceptance * experimental results * Z0 --> electron positron * J/psi(3100) --> electron positron * 13000 GeV-cms
Obor OECD: Particles and field physics
Impakt faktor: 1.454, rok: 2019
Způsob publikování: Open access

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 √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 → e+e− decays and radiative Z boson decays are also presented.
Trvalý link: http://hdl.handle.net/11104/0305156