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Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector

Aad G.
•
Aakvaag E.
•
Abbott B.
altro
Zwalinski L.
2025
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
A search for T and Y vector-like quarks produced in proton-proton collisions at a centre-of-mass energy of 13 TeV and decaying into Wb in the fully hadronic final state is presented. The search uses 139 fb−1 of data collected by the ATLAS detector at the LHC from 2015 to 2018. The final state is characterised by a hadronically decaying W boson with large Lorentz boost and a b-tagged jet, which are used to reconstruct the invariant mass of the vector-like quark candidate. The main background is QCD multijet production, which is estimated using a data-driven method. Upon finding no significant excess in data, mass limits at 95% confidence level are obtained as a function of the global coupling parameter, κ. The observed lower limits on the masses of Y quarks with κ = 0.5 and κ = 0.7 are 2.0 TeV and 2.4 TeV, respectively. For T quarks, the observed mass limits are 1.4 TeV for κ = 0.5 and 1.9 TeV for κ = 0.7.
DOI
10.1007/JHEP02(2025)075
Archivio
https://hdl.handle.net/11390/1312484
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-105012466408
https://ricerca.unityfvg.it/handle/11390/1312484
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
Soggetti
  • Beyond Standard Model...

  • Hadron-Hadron Scatter...

  • Proton-Proton Scatter...

  • Vector-Like Quarks

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