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

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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 √ s = 7 and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
Electrones
Fotones
ATLAS detector
large hadron collider
Calibración
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78861
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78861
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Electrones
Fotones
ATLAS detector
large hadron collider
Calibración
spellingShingle Ciencias Exactas
Física
Electrones
Fotones
ATLAS detector
large hadron collider
Calibración
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
topic_facet Ciencias Exactas
Física
Electrones
Fotones
ATLAS detector
large hadron collider
Calibración
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 √ s = 7 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.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
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
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/78861
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bdutipo_str Repositorios
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