Measurements of Electroweak Wjj Production and Constraints on Anomalous Gauge Couplings with the ATLAS Detector

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dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.authorAaboud, M.en_US
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbidi, S. H.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.date.accessioned2018-05-15T19:51:24Z
dc.date.available2018-05-15T19:51:24Z
dc.date.created2017-09-02en_US
dc.date.issued2018-05-15
dc.description.abstractThe rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range | η| > 2.5. This paper presents a novel strategy for forward pile-up jet tagging that exploits jet shapes and topological jet correlations in pile-up interactions. Measurements of the per-jet tagging efficiency are presented using a data set of 3.2 fb⁻¹ of proton–proton collisions at a centre-of-mass energy of 13 TeV collected with the ATLAS detector. The fraction of pile-up jets rejected in the range 2.5 < | η| < 4.5 is estimated in simulated events with an average of 22 interactions per bunch-crossing. It increases with jet transverse momentum and, for jets with transverse momentum between 20 and 50 GeV, it ranges between 49% and 67% with an efficiency of 85% for selecting hard-scatter jets. A case study is performed in Higgs boson production via the vector-boson fusion process, showing that these techniques mitigate the background growth due to additional proton–proton interactions, thus enhancing the reach for such signatures. © 2017, CERN for the benefit of the ALICE collaboration.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, J. Abdallah, et al. 2017. "Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector." European Physical Journal C 77(9).en_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue9en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/5722
dc.identifier.volume77en_US
dc.language.isoenen_US
dc.publisherSpringer New York Llcen_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-017-5081-5
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2017 CERN, for the ATLAS Collaboration.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectJets (Nuclear physics)en_US
dc.subjectProton-proton interactionsen_US
dc.subjectStandard model (Nuclear physics)en_US
dc.subjectTransverse momentumen_US
dc.titleMeasurements of Electroweak Wjj Production and Constraints on Anomalous Gauge Couplings with the ATLAS Detectoren_US
dc.type.genrearticleen_US

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