Search for Pair Production of Heavy Vector-Like Quarks Decaying to High-P_T W Bosons and B Quarks in the Lepton-Plus-Jets Final State in PP Collisions at √s=13 TeV with the ATLAS Detector

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.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbidi, S. H.en_US
dc.contributor.authorAbouZeid, O. S.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.date.accessioned2018-09-12T15:57:22Z
dc.date.available2018-09-12T15:57:22Z
dc.date.created2017-10-20
dc.date.issued2017-10-20en_US
dc.description.abstractA search is presented for the pair production of heavy vector-like T quarks, primarily targeting the T quark decays to a W boson and a b-quark. The search is based on 36.1 fb⁻¹ of pp collisions at √s=13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, including at least one b-tagged jet and a large-radius jet identified as originating from the hadronic decay of a high-momentum W boson. No significant deviation from the Standard Model expectation is observed in the reconstructed T mass distribution. The observed 95% confidence level lower limit on the T mass are 1350 GeV assuming 100% branching ratio to Wb. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. This search is also sensitive to a heavy vector-like B quark decaying to Wt and other final states. The results are thus reinterpreted to provide a 95% confidence level lower limit on the B quark mass at 1250 GeV assuming 100% branching ratio to Wt; in the SU(2) singlet scenario, the limit is 1080 GeV. Mass limits on both T and B production are also set as a function of the decay branching ratios. The 100% branching ratio limits are found to be applicable to heavy vector-like Y and X production that decay to Wb and Wt, respectively.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, et al. 2017. "Search for pair production of heavy vector-like quarks decaying to high-p_T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector." Journal of High Energy Physics 2017(10), doi:10.1007/JHEP10(2017)141en_US
dc.identifier.issn1126-6708en_US
dc.identifier.issue10en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6065
dc.identifier.volume2017en_US
dc.language.isoenen_US
dc.publisherSpringer Verlagen_US
dc.relation.urihttp://dx.doi.org/10.1007/JHEP10(2017)141
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2016 CERN, for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceJournal of High Energy Physics
dc.subjectQuarksen_US
dc.subjectW bosonsen_US
dc.subjectProton-proton interactionsen_US
dc.subjectLeptons (Nuclear physics)en_US
dc.subjectJets (Nuclear physics)en_US
dc.subjectHadrons—Decayen_US
dc.subjectStandard model (Nuclear physics)en_US
dc.subjectHadrons--Scatteringen_US
dc.titleSearch for Pair Production of Heavy Vector-Like Quarks Decaying to High-P_T W Bosons and B Quarks in the Lepton-Plus-Jets Final State in PP Collisions at √s=13 TeV with the ATLAS Detectoren_US
dc.type.genrearticleen_US

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