A search for bottom-type vector-like quark pair production in dileptonic and fully hadronic final states in proton-proton collisions at $$\sqrt{s}$$ = 13 TeV
A search is described for the production of a pair of bottom-type vector-like quarks (B VLQs) with mass greater than 1000 GeV. Each B VLQ decays into a b quark and a Higgs boson, a b quark and a Z boson, or a t quark and a W boson. This analysis considers both fully hadronic final states and those containing a charged lepton pair from a Z boson decay. The products of the H $to$ bb boson decay and of the hadronic Z or W boson decays can be resolved as two distinct jets or merged into a single jet, so the final states are classified by the number of reconstructed jets. The analysis uses data corresponding to an integrated luminosity of 138 fb$$^{-1}$$ collected in proton-proton collisions at $$\sqrt{s}$$ = 13 TeV with the CMS detector at the LHC from 2016 to 2018. No excess over the expected background is observed. Lower limits are set on the B VLQ mass at 95% confidence level. These depend on the B VLQ branching fractions and are 1570 and 1540 GeV for 100% B $$\to$$ bH and 100% B $$\to$$ bZ, respectively. In most cases, the mass limits obtained exceed previous limits by at least 100 GeV.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 2318673
- Report Number(s):
- CMS-B2G-20-014; CERN-EP-2024-016; FERMILAB-PUB-24-0092-CMS; arXiv:2402.13808; oai:inspirehep.net:2760468
- Journal Information:
- TBD, Journal Name: TBD
- Country of Publication:
- United States
- Language:
- English
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