@misc{10481/86128,
year = {2023},
month = {8},
url = {https://hdl.handle.net/10481/86128},
abstract = {Abstract: This paper describes a search for the single production of an up-type vector-like
quark (T ) decaying as T → Ht or T → Zt. The search utilises a dataset of pp collisions at
√s = 13 TeV collected with the ATLAS detector during the 2015–2018 data-taking period
of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb−1. Data
are analysed in final states containing a single lepton with multiple jets and b-jets. The
presence of boosted heavy resonances in the event is exploited to discriminate the signal
from the Standard Model background. No significant excess above the Standard Model ex-
pectation is observed, and 95% CL upper limits are set on the production cross section of T
quarks in different decay channels. The results are interpreted in several benchmark scenar-
ios to set limits on the mass and universal coupling strength (κ) of the vector-like quark. For
singlet T quarks, κ values above 0.53 are excluded for all masses below 2.3 TeV. At a mass
of 1.6 TeV, κ values as low as 0.35 are excluded. For T quarks in the doublet scenario, where
the production cross section is much lower, κ values above 0.72 are excluded for all masses
below 1.7 TeV, and this exclusion is extended to κ above 0.55 for low masses around 1.0 TeV},
organization = {CERN},
organization = {MICINN, Spain},
organization = {COST},
organization = {ERC},
organization = {ERDF},
organization = {Horizon 2020},
organization = {Marie Skłodowska-Curie Actions},
organization = {European Union},
organization = {EU-ESF},
organization = {La Caixa Banking Foundation},
organization = {CERCA Programme Generalitat de Catalunya},
organization = {PROMETEO},
organization = {GenT Programmes Generalitat Valenciana, Spain},
organization = {PIC (Spain)},
publisher = {Springer Nature},
keywords = {Hadron-Hadron Scattering},
keywords = {Vector-Like Quarks},
title = {Search for single production of vector-like T quarks decaying into Ht or Zt in pp collisions at √s = 13 TeV with the ATLAS detector},
doi = {10.1007/JHEP08(2023)153},
author = {Atlas Collaboration and Aad, G. and Rodríguez Chala, Mikael},
}