Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at s√=13 TeV

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dc.citation.articleNumber85
dc.citation.journalTitleJournal of High Energy Physics
dc.citation.volumeNumber2017
dc.contributor.authorCMS Collaboration
dc.date.accessioned2018-12-12T18:59:21Z
dc.date.available2018-12-12T18:59:21Z
dc.date.issued2017
dc.description.abstractA search for pair production of massive vector-like T and B quarks in proton-proton collisions at s√=13s=13 \sqrt{s}=13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb−1. The T and B quarks are assumed to decay through three possible channels into a heavy boson (either a W, Z or Higgs boson) and a third generation quark. This search is performed in final states with one charged lepton and several jets, exploiting techniques to identify W or Higgs bosons decaying hadronically with large transverse momenta. No excess over the predicted standard model background is observed. Upper limits at 95% confidence level on the T quark pair production cross section are set that exclude T quark masses below 860 GeV in the singlet, and below 830 GeV in the doublet branching fraction scenario. For other branching fraction combinations with ℬ(T → tH) + ℬ(T → bW) ≥ 0.4, lower limits on the T quark range from 790 to 940 GeV. Limits are also set on pair production of singlet vector-like B quarks, which can be excluded up to a mass of 730 GeV. The techniques showcased here for understanding highly-boosted final states are important as the sensitivity to new particles is extended to higher masses.
dc.identifier.citationCMS Collaboration. "Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at s√=13 TeV." <i>Journal of High Energy Physics,</i> 2017, (2017) Springer: https://doi.org/10.1007/JHEP11(2017)085.
dc.identifier.doihttps://doi.org/10.1007/JHEP11(2017)085
dc.identifier.urihttps://hdl.handle.net/1911/103836
dc.language.isoeng
dc.publisherSpringer
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleSearch for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at s√=13 TeV
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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