Search for Bottom-Type Vectorlike Quark Pair Production in Dileptonic and Fully Hadronic Final States in Proton-Proton Collisions at √<i>s</I>=13 Tev

Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, T.Chatterjee, S.Zhokin, A.2025-01-102025-01-1020242470-00102470-0029https://doi.org/10.1103/PhysRevD.110.052004Tedeschi, Tommaso/0000-0002-7125-2905; Shopova, Mariana/0000-0001-6664-2493; KARA, Ozgun/0000-0002-4661-0096; Calderon, Dr. Alicia/0000-0002-7205-2040; Della Ricca, Giuseppe/0000-0003-2831-6982; Navarrete Ramos, Efren/0000-0002-5180-4020; Tapper, Alexander/0000-0003-4543-864X; Chatterjee, Suman/0000-0003-2660-0349; Martinez Rivero, Celso/0000-0002-3224-956X; Osherson, Marc/0000-0002-9760-9976; Pozniak, Krzysztof/0000-0001-5426-1423; Borshch, Vladislav/0000-0002-5479-1982; Dragicevic, Marko/0000-0003-1967-6783; Pesaresi, Mark/0000-0002-9759-1083; Akgun, Bora/0000-0001-8888-3562; Hall, Geoffrey/0000-0002-6299-8385; Yalvac, Metin/0000-0003-4915-9162; Hernandez Calama, Jose Maria/0000-0001-6436-7547; Hussain, Priya Sajid/0000-0002-4825-5278; Grunewald, Martin/0000-0002-5754-0388; Schieck, Jochen/0000-0002-1058-8093A search is described for the production of a pair of bottom-type vectorlike 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 -> 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 root 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 the 95% confidence level. These depend on the B VLQ branching fractions and are 1570 and 1540 GeV for 100% B -> bH and 100% B -> bZ, respectively. In most cases, the mass limits obtained exceed previous limits by at least 100 GeV.eninfo:eu-repo/semantics/openAccess[No Keyword Available]Search for Bottom-Type Vectorlike Quark Pair Production in Dileptonic and Fully Hadronic Final States in Proton-Proton Collisions at √<i>s</I>=13 TevArticle10.1103/PhysRevD.110.0520042-s2.0-85211701187