File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016

TitleMeasurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016
Authors
Issue Date2019
PublisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org
Citation
The European Physical Journal C: Particles and Fields, 2019, v. 79 n. 3, article no. 205, p. 1-41 How to Cite?
AbstractThe efficiency of the photon identification criteria in the ATLAS detector is measured using 36.1fb1 to 36.7fb1 of pp collision data at s=13 TeV collected in 2015 and 2016. The efficiencies are measured separately for converted and unconverted isolated 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 with the predictions from simulation after correcting the variables describing the shape of electromagnetic showers in simulation for the average differences observed relative to data. Data-to-simulation efficiency ratios are determined to account for the small residual efficiency differences. These factors are measured with uncertainties between 0.5% and 5% depending on the photon transverse momentum and pseudorapidity. The impact of the isolation criteria on the photon identification efficiency, and that of additional soft pp interactions, are also discussed. The probability of reconstructing an electron as a photon candidate is measured in data, and compared with the predictions from simulation. The efficiency of the reconstruction of photon conversions is measured using a sample of photon candidates from Z→ μμγ events, exploiting the properties of the ratio of the energies deposited in the first and second longitudinal layers of the ATLAS electromagnetic calorimeter.
Persistent Identifierhttp://hdl.handle.net/10722/269446
ISSN
2020 Impact Factor: 4.59
2020 SCImago Journal Rankings: 1.938
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorATLAS Collaboration-
dc.contributor.authorLo, CY-
dc.contributor.authorOrlando, N-
dc.contributor.authorParedes Hernandez, DK-
dc.contributor.authorTu, Y-
dc.date.accessioned2019-04-24T08:07:53Z-
dc.date.available2019-04-24T08:07:53Z-
dc.date.issued2019-
dc.identifier.citationThe European Physical Journal C: Particles and Fields, 2019, v. 79 n. 3, article no. 205, p. 1-41-
dc.identifier.issn1434-6044-
dc.identifier.urihttp://hdl.handle.net/10722/269446-
dc.description.abstractThe efficiency of the photon identification criteria in the ATLAS detector is measured using 36.1fb1 to 36.7fb1 of pp collision data at s=13 TeV collected in 2015 and 2016. The efficiencies are measured separately for converted and unconverted isolated 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 with the predictions from simulation after correcting the variables describing the shape of electromagnetic showers in simulation for the average differences observed relative to data. Data-to-simulation efficiency ratios are determined to account for the small residual efficiency differences. These factors are measured with uncertainties between 0.5% and 5% depending on the photon transverse momentum and pseudorapidity. The impact of the isolation criteria on the photon identification efficiency, and that of additional soft pp interactions, are also discussed. The probability of reconstructing an electron as a photon candidate is measured in data, and compared with the predictions from simulation. The efficiency of the reconstruction of photon conversions is measured using a sample of photon candidates from Z→ μμγ events, exploiting the properties of the ratio of the energies deposited in the first and second longitudinal layers of the ATLAS electromagnetic calorimeter.-
dc.languageeng-
dc.publisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org-
dc.relation.ispartofThe European Physical Journal C: Particles and Fields-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016-
dc.typeArticle-
dc.identifier.emailOrlando, N: norlando@hku.hk-
dc.identifier.emailParedes Hernandez, DK: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1140/epjc/s10052-019-6650-6-
dc.identifier.scopuseid_2-s2.0-85062611658-
dc.identifier.hkuros297412-
dc.identifier.volume79-
dc.identifier.issue3-
dc.identifier.spagearticle no. 205, p. 1-
dc.identifier.epagearticle no. 205, p. 41-
dc.identifier.isiWOS:000460674700008-
dc.publisher.placeGermany-
dc.identifier.issnl1434-6044-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats