Identification and Energy Calibration of Hadronically Decaying Tau Leptons with the ATLAS Experiment in pp Collisions at √s̅ = 8 TeV

dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)en_US
dc.contributor.VIAF250674117 (Izen, JM)en_US
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, Michael |Lou, Xinchouen_US
dc.contributor.authorMeirose, Bernharden_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.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2015-09-29T15:47:02Z
dc.date.available2015-09-29T15:47:02Z
dc.date.created2015-05en_US
dc.date.issued2015-05en_US
dc.description.abstractThis paper describes the trigger and offline reconstruction, identification and energy calibration algorithms for hadronic decays of tau leptons employed for the data collected from pp collisions in 2012 with the ATLAS detector at the LHC center-of-mass energy √s̅ = 8 TeV. The performance of these algorithms is measured in most cases with Z decays to tau leptons using the full 2012 dataset, corresponding to an integrated luminosity of 20.3 fb⁻¹ An uncertainty on the offline reconstructed tau energy scale of 2-4%, depending on transverse energy and pseudorapidity, is achieved using two independent methods. The offline tau identification efficiency is measured with a precision of 2.5% for hadronically decaying tau leptons with one associated track, and of 4% for the case of three associated tracks, inclusive in pseudorapidity and for a visible transverse energy greater than 20 GeV. For hadronic tau lepton decays selected by offline algorithms, the tau trigger identification efficiency is measured with a precision of 2-8%, depending on the transverse energy. The performance of the tau algorithms, both offline and at the trigger level, is found to be stable with respect to the number of concurrent proton-proton interactions and has supported a variety of physics results using hadronically decaying tau leptons at ATLAS.en_US
dc.identifier.bibliographicCitationAad, G., B. Abbott, J. Abdallah, et al. 2015. "Identification and energy calibration of hadronically decaying tau leptons with the ATLAS experiment in pp collisions at √s̅ = 8 TeV." European Physical Journal C 2015(5) doi:10.1140/epjc/s10052-015-3500-zen_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue5en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4642
dc.identifier.volume2015en_US
dc.language.isoen_USen_US
dc.publisherSpringeren_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-015-3500-z
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2015 CERN, for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectParticles (Nuclear physics)en_US
dc.subjectMonte Carlo methodsen_US
dc.subjectBosonsen_US
dc.subjectProton-proton interactionsen_US
dc.subjectZ bosonsen_US
dc.titleIdentification and Energy Calibration of Hadronically Decaying Tau Leptons with the ATLAS Experiment in pp Collisions at √s̅ = 8 TeVen_US
dc.typeArticleen_US
dc.type.genreTexten_US

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