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Search for single production of a vectorlike T quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector

Aad G.
•
Abbott B.
•
Abbott D. C.
altro
Zwalinski L.
2022
  • journal article

Periodico
PHYSICAL REVIEW D
Abstract
A search is made for a vectorlike T quark decaying into a Higgs boson and a top quark in 13 TeV proton-proton collisions using the ATLAS detector at the Large Hadron Collider with a data sample corresponding to an integrated luminosity of 139 fb-1. The Higgs-boson and top-quark candidates are identified in the all-hadronic decay mode, where H→bb ̄ and t→bW→bqq ̄′ are reconstructed as large-radius jets. The candidate Higgs boson, top quark, and associated B hadrons are identified using tagging algorithms. No significant excess is observed above the background, so limits are set on the production cross section of a singlet T quark at 95% confidence level, depending on the mass mT and coupling κT of the vectorlike T quark to Standard Model particles. In the considered mass range between 1.0 and 2.3 TeV, the upper limit on the allowed coupling values increases with mT from a minimum value of 0.35 for 1.07<1.4 TeV to 1.6 for mT=2.3 TeV.
DOI
10.1103/PhysRevD.105.092012
WOS
WOS:000810236400005
Archivio
https://hdl.handle.net/11390/1274614
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85131670293
https://ricerca.unityfvg.it/handle/11390/1274614
Diritti
open access
google-scholar
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