Electron and Photon Energy Calibration with the ATLAS Detector using LHC Run 1 Data

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dc.contributor.ORCID56366505900 (Lou, X)en_US
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdel Khalek, S.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAben, R.en_US
dc.contributor.authorAbi, B.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLeyton, Michaelen_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorNamasivayam, Harisankaren_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorLeyton, Michaelen_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2015-03-18T15:33:52Z
dc.date.available2015-03-18T15:33:52Z
dc.date.created2014-10-01en_US
dc.date.issued2014-10-01en_US
dc.description.abstractThis 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.en_US
dc.identifier.bibliographicCitationG. Aad, Abbott, B. et al. 2014. "Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data." Eur. Phys. J. C., 74(3071), doi:10.1140/epjc/s10052-014-3071-4en_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue10en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4346
dc.identifier.volume74en_US
dc.language.isoen_USen_US
dc.publisherSpringer New York LLCen_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-014-3071-4
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2014 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectCalorimetersen_US
dc.subjectIntercalibrationen_US
dc.subjectPhotonsen_US
dc.subjectElectronsen_US
dc.titleElectron and Photon Energy Calibration with the ATLAS Detector using LHC Run 1 Dataen_US
dc.typeTexten_US
dc.type.genreArticleen_US

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Izen, Joseph M.
Lou, Xinchou
NSM Staff-Student Research