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

The CMS collaboration

Research output: Contribution to journalArticle

6 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 13 TeV 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 significant 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% confidence 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.[Figure not available: see fulltext.].

Original languageEnglish
Article number73
JournalJournal of High Energy Physics
Volume2017
Issue number8
DOIs
Publication statusPublished - 1 Aug 2017

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leptons
quarks
collisions
protons
center of mass
confidence
bosons
luminosity
detectors
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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

In: Journal of High Energy Physics, Vol. 2017, No. 8, 73, 01.08.2017.

Research output: Contribution to journalArticle

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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 13 TeV 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 significant 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{\%} confidence 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.[Figure not available: see fulltext.].",
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