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

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journal contribution
posted on 2023-06-09, 18:55 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, Samuel Jones, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, Kate ShawKate Shaw, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, F Tresoldi, Fabrizio Trovato, Iacopo Vivarelli, E Winkels, The ATLAS Collaboration, others
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 vs = 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/? ? e + e - decays and radiative Z boson decays are also presented.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of Instrumentation

ISSN

1748-0221

Publisher

IOP Publishing

Volume

14

Page range

1-58

Article number

a03017

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-09-23

First Open Access (FOA) Date

2019-09-23

First Compliant Deposit (FCD) Date

2019-09-03

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