Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data

The algorithms used by the ATLAS Collaboration to reconstruct and identify prompt photons are described. Measurements of the photon identification efficiencies are reported, using 4.9 fb−1 of pp collision data collected at the LHC at √s = 7 TeV and 20.3 fb−1 at √s = 8 TeV. The efficiencies are measu...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
fotones
Física
mediciones
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/73045
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-73045
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
fotones
Física
mediciones
spellingShingle Ciencias Exactas
fotones
Física
mediciones
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
topic_facet Ciencias Exactas
fotones
Física
mediciones
description The algorithms used by the ATLAS Collaboration to reconstruct and identify prompt photons are described. Measurements of the photon identification efficiencies are reported, using 4.9 fb−1 of pp collision data collected at the LHC at √s = 7 TeV and 20.3 fb−1 at √s = 8 TeV. The efficiencies are measured separately for converted and unconverted photons, in four different pseudorapidity regions, for transverse momenta between 10 GeV and 1.5 TeV. The results from the combination of three data-driven techniques are compared to the predictions from a simulation of the detector response, after correcting the electromagnetic shower momenta in the simulation for the average differences observed with respect to data. Data-to-simulation efficiency ratios used as correction factors in physics measurements are determined to account for the small residual efficiency differences. These factors are measured with uncertainties between 0.5% and 10% in 7 TeV data and between 0.5% and 5.6% in 8 TeV data, depending on the photon transverse momentum and pseudorapidity.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
title_short Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
title_full Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
title_fullStr Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
title_full_unstemmed Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
title_sort measurement of the photon identification efficiencies with the atlas detector using lhc run-1 data
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/73045
work_keys_str_mv AT alconadaverzinimariajosefina measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT alonsofrancisco measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT arduhfranciscoanuar measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT dovamariateresa measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT monticellifernandogabriel measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT wahlberghernanpablo measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
AT theatlascollaboration measurementofthephotonidentificationefficiencieswiththeatlasdetectorusinglhcrun1data
bdutipo_str Repositorios
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