Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data

Mostrar todas las versiones(2)

This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb-1 of LHC proton–proton collision data taken at centre-of-mass energies of (Equation Present) and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate...

Descripción completa

Detalles Bibliográficos
Autor principal: The ATLAS Collaboration
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v74_n10_p1_TheATLASCollaboration
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14346044_v74_n10_p1_TheATLASCollaboration
record_format dspace
spelling todo:paper_14346044_v74_n10_p1_TheATLASCollaboration2023-10-03T16:14:56Z Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data The ATLAS Collaboration This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb-1 of LHC proton–proton collision data taken at centre-of-mass energies of (Equation Present) and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms. The response of the calorimeter layers is equalised in data and simulation, and the longitudinal profile of the electromagnetic showers is exploited to estimate the passive material in front of the calorimeter and reoptimise the detector simulation. After all corrections, the Z resonance is used to set the absolute energy scale. For electrons from Z decays, the achieved calibration is typically accurate to 0.05 % in most of the detector acceptance, rising to 0.2 % in regions with large amounts of passive material. The remaining inaccuracy is less than 0.2–1 % for electrons with a transverse energy of 10 GeV, and is on average 0.3 % for photons. The detector resolution is determined with a relative inaccuracy of less than 10 % for electrons and photons up to 60 GeV transverse energy, rising to 40 % for transverse energies above 500 GeV. © 2014, The Author(s). JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v74_n10_p1_TheATLASCollaboration
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb-1 of LHC proton–proton collision data taken at centre-of-mass energies of (Equation Present) and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms. The response of the calorimeter layers is equalised in data and simulation, and the longitudinal profile of the electromagnetic showers is exploited to estimate the passive material in front of the calorimeter and reoptimise the detector simulation. After all corrections, the Z resonance is used to set the absolute energy scale. For electrons from Z decays, the achieved calibration is typically accurate to 0.05 % in most of the detector acceptance, rising to 0.2 % in regions with large amounts of passive material. The remaining inaccuracy is less than 0.2–1 % for electrons with a transverse energy of 10 GeV, and is on average 0.3 % for photons. The detector resolution is determined with a relative inaccuracy of less than 10 % for electrons and photons up to 60 GeV transverse energy, rising to 40 % for transverse energies above 500 GeV. © 2014, The Author(s).
format JOUR
author The ATLAS Collaboration
spellingShingle The ATLAS Collaboration
Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
author_facet The ATLAS Collaboration
author_sort The ATLAS Collaboration
title Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
title_short Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
title_full Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
title_fullStr Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
title_full_unstemmed Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
title_sort electron and photon energy calibration with the atlas detector using lhc run 1 data
url http://hdl.handle.net/20.500.12110/paper_14346044_v74_n10_p1_TheATLASCollaboration
work_keys_str_mv AT theatlascollaboration electronandphotonenergycalibrationwiththeatlasdetectorusinglhcrun1data
_version_ 1807319937907163136

Ejemplares similares