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Title
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Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at root s=13TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search for the pair production of heavy vector-like partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton-proton collisions at . The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 production include those where one of the T quarks decays via TtZ and the other via TbW, tZ, or tH, where H is a Higgs boson. For the BB case, final states include those where one of the B quarks decays via BbZ and the other BtW, bZ, or bH. Events with two oppositely charged electrons or muons, consistent with coming from the decay of a Z boson, and jets are investigated. The number of observed events is consistent with standard model background estimations. Lower limits at 95% confidence level are placed on the masses of the T and B quarks for a range of branching fractions. Assuming 100% branching fractions for TtZ, and BbZ, T and B quark mass values below 1280 and 1130 respectively, are excluded. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2019
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-019-6855-8
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Volume/pages
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79
:4
(2019)
, 31 p.
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Article Reference
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364
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ISI
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000466094100001
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Pubmed ID
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31180390
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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