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Search for pair production of vector-like quarks in the $bW\overline bW$ channel from proton-proton collisions at $\sqrt s$ = 13 TeV

Abstract

A search is presented for the production of vector-like quark pairs, or , with electric charge of 2/3 (T) or (Y), in proton–proton collisions at . The data were collected by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of . The T and Y quarks are assumed to decay exclusively to a W boson and a b quark. The search is based on events with a single isolated electron or muon, large missing transverse momentum, and at least four jets with large transverse momenta. In the search, a kinematic reconstruction of the final state observables is performed, which would permit a signal to be detected as a narrow mass peak (≈7% resolution). The observed number of events is consistent with the standard model prediction. Assuming strong pair production of the vector-like quarks and a 100% branching fraction to , a lower limit of 1295 GeV at 95% confidence level is set on the T and Y quark masses.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2018
Deposited On:06 Mar 2019 08:53
Last Modified:18 Jun 2025 01:44
Publisher:Elsevier
ISSN:0370-2693
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2018.01.077
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  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)

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