Search for single vector-like B quark production and decay via B → bH (bb) in pp collisions at √s = 13 TeV with the ATLAS detector Aad, Georges Aguilar Saavedra, Juan Antonio Rodríguez Chala, Mikael Atlas Collaboration, / Vector-Like Quarks Beyond Standard Model Exotics A search is presented for single production of a vector-like B quark decaying into a Standard Model b-quark and a Standard Model Higgs boson, which decays into a bb pair. The search is carried out in 139 fb−1 of √s = 13TeV proton-proton collision data collected by the ATLAS detector at the LHC between 2015 and 2018. No significant deviation from the Standard Model background prediction is observed, and mass-dependent exclusion limits at the 95% confidence level are set on the resonance production cross-section in several theoretical scenarios determined by the couplings cW, cZ and cH between the B quark and the Standard Model W, Z and Higgs bosons, respectively. For a vector-like B occurring as an isospin singlet, the search excludes values of cW greater than 0.45 for a B resonance mass (mB) between 1.0 and 1.2TeV. For 1.2TeV < mB < 2.0TeV, cW values larger than 0.50–0.65 are excluded. If the B occurs as part of a (B, Y) doublet, the smallest excluded cZ coupling values range between 0.3 and 0.5 across the investigated resonance mass range 1.0TeV < mB < 2.0TeV. 2024-04-25T08:51:11Z 2024-04-25T08:51:11Z 2023-11-23 journal article The ATLAS collaboration., Aad, G., Abbott, B. et al. Search for single vector-like B quark production and decay via B → bH (bb) in pp collisions at √s = 13 TeV with the ATLAS detector. J. High Energ. Phys. 2023, 168 (2023). https://doi.org/10.1007/JHEP11(2023)168 https://hdl.handle.net/10481/91144 10.1007/JHEP11(2023)168 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Springer Nature