Search for top quark partners with charge 5/3 in proton-proton collisions at √s = 13 TeV

CMS Collaboration

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12 Citations (Scopus)

Abstract

A search for the production of heavy partners of the top quark with charge 5/3 (X5/3) decaying into a top quark and a W boson is performed with a data sample corresponding to an integrated luminosity of 2.3 fb-1, collected in proton-proton collisions at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. Final states with either a pair of same-sign leptons or a single lepton, along with jets, are considered. No signicant excess is observed in the data above the expected standard model background contribution and an X5/3 quark with right-handed (left-handed) couplings is excluded at 95% condence level for masses below 1020 (990) GeV. These are the first limits based on a combination of the same-sign dilepton and the single-lepton final states, as well as the most stringent limits on the X5/3 mass to date.
Original languageEnglish
Article number073
Number of pages43
JournalJournal of High Energy Physics
Volume2017
Issue number8
DOIs
Publication statusPublished - 2017
Externally publishedYes

Keywords

  • Beyond Standard Model
  • Exotics
  • Hadron-Hadron scattering (experiments)
  • Top physics

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