Search for production of a single vector-like quark decaying to tH or tZ in the all-hadronic final state in pp collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
CMS-B2G-19-001, 2024.

Abstract (data abstract)
A search for electroweak production of a single vector-like quark tprime in association with a bottom quark (b) and decaying fully hadronically is presented. This search uses proton-proton collision data at $\sqrt{s} = 13\TeV$ collected by the CMS experiment at the CERN LHC during 2016-2018, corresponding to an integrated luminosity of 138\fbinv. The tprime have charge 2/3 and can decay to a top quark (t) and a Higgs or Z boson. Event kinematics and the presence of jets containing b hadrons are used to reconstruct the hadronic decays of the t and Higgs or Z boson. No discrepancy from the standard model prediction is observed in the data. For \tprime masses from 600 to 1200~GeV, the 95% confidence level upper limits on the production cross section of a tprime produced in association with a b and decaying via a t and a Higgs or Z boson range from 1260 to 68 fb.

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