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 language | English |
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Article number | 073 |
Number of pages | 43 |
Journal | Journal of High Energy Physics |
Volume | 2017 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2017 |
Externally published | Yes |
Keywords
- Beyond Standard Model
- Exotics
- Hadron-Hadron scattering (experiments)
- Top physics