Search for production of a single vectorlike quark decaying to tH or tZ in the all-hadronic final state in pp collisions at √s=13 TeV

(CMS Collaboration) Ford, WT; Hassani, A; Karathanasis, G; MacDonald, E; Manganelli, N; Marini, F; Perloff, A; Savard, C; Schonbeck, N; Stenson, K; Ulmer, KA; Wagner, SR; Zipper, N; Alexander, J; Bright-Thonney, S; Chen, X; Cranshaw, DJ; Fan, J; Fan, X; Gadkari, D; Hogan, S; Kotamnives, P; Monroy, J; Oshiro, M; Patterson, JR; Reichert, J; Reid, M; Ryd, A; Thom, J; Wittich, P; Zou, R; Albrow, M; Alyari, M; Amram, O; Apollinari, G; Apresyan, A; Bauerdick, LAT; Berry, D; Berryhill, J; Bhat, PC; Burkett, K; Butler, JN; Canepa, A; Cerati, GB; Cheung, HWK; Chlebana, F; Cummings, G; Dickinson, J; Dutta, I; Elvira, VD; Feng, Y; Freeman, J; Gandrakota, A; Gecse, Z; Gray, L; Green, D; Grummer, A; Grünendahl, S; Guerrero, D; Gutsche, O; Harris, RM; Heller, R; Herwig, TC; Hirschauer, J; Horyn, L; Jayatilaka, B; Jindariani, S; Johnson, M; Joshi, U; Klijnsma, T; Klima, B; Kwok, KHM; Lammel, S; Lincoln, D; Lipton, R; Liu, T; Madrid, C; Maeshima, K; Mantilla, C; Mason, D; McBride, P; Merkel, P; Mrenna, S; 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Kozyrev, A; Krasnikov, N; Lanev, A; Levchenko, P; Lychkovskaya, N; Makarenko, V; Malakhov, A; Matveev, V; Murzin, V; Nikitenko, A; Obraztsov, S; Oreshkin, V; Palichik, V; Perelygin, V; Perfilov, M; Petrushanko, S; Polikarpov, S; Popov, V; Radchenko, O; Savina, M; Savrin, V; Shalaev, V; Shmatov, S; Shulha, S; Skovpen, Y; Slabospitskii, S; Smirnov, V; Sosnov, D; Sulimov, V; Tcherniaev, E; Terkulov, A; Teryaev, O; Tlisova, I; Toropin, A; Uvarov, L; Uzunian, A; Volkov, P; Vorobyev, A; Vorotnikov, G; Voytishin, N; Yuldashev, BS; Zarubin, A; Zhizhin, I; Zhokin, A (2024) Search for production of a single vectorlike quark decaying to tH or tZ in the all-hadronic final state in pp collisions at √s=13 TeV. Physical Review D, 110 (7). ISSN 2470-0010

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Abstract

A search for electroweak production of a single vectorlike T quark in association with a bottom (b) quark in the all-hadronic decay channel is presented. This search uses proton-proton collision data at root s = 13 TeV collected by the CMS experiment at the CERN LHC during 2016-2018, corresponding to an integrated luminosity of 138 fb(-1). The T quark is assumed to have charge 2/3 and decay to a top (t) quark and a Higgs (H) or Z boson. Hadronic decays of the t quark and the H or Z boson are reconstructed from the kinematic properties of jets, including those containing b hadrons. No deviation from the standard model prediction is observed in the reconstructed tH and tZ invariant mass distributions. The 95% confidence level upper limits on the product of the production cross section and branching fraction of a T quark produced in association with a b quark and decaying via tH or tZ range from 1260 to 68 fb for T quark masses of 600-1200 GeV.

Item Type:	Article
Uncontrolled Keywords:	High energy physics ; Experimental particle physics ; LHC ; CMS ; p p: scattering ; p p: colliding beams ; quark: single production ; quark: vector particle ; charge: 2/3 ; quark: mass ; quark: decay modes ; final state: ((n)jet) ; jet: bottom ; bottom: particle identification ; channel cross section: branching ratio: upper limit ; CERN Lab ; electroweak interaction ; Higgs particle: hadronic decay ; Z0: hadronic decay ; CERN LHC Coll ; kinematics ; experimental results ; 13000 GeV-cms ; Q009TPS
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Division of Experimental Physics
Depositing User:	Virna Brumnić
Date Deposited:	23 Jan 2026 07:03
URI:	http://fulir.irb.hr/id/eprint/11090
DOI:	10.1103/PhysRevD.110.072012

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