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@ARTICLE{Aad:588110,
author = {Aad, Georges and others},
collaboration = {{ATLAS Collaboration}},
title = {{S}earch for pair-production of vector-like quarks in pp
collision events at s=13 {T}e{V} with at least one
leptonically decaying {Z} boson and a third-generation quark
with the {ATLAS} detector},
journal = {Physics letters / B},
volume = {843},
issn = {0031-9163},
address = {Amsterdam},
publisher = {North-Holland Publ.},
reportid = {PUBDB-2023-04726, arXiv:2210.15413. CERN-EP-2021-207},
pages = {138019 -},
year = {2023},
note = {Phys. Lett. B 843 (2023) 138019. 26 pages plus author list,
44 pages in total, 8 figures, 4 tables. All figures
including auxiliary figures are available at
https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-58},
abstract = {A search for the pair-production of vector-like quarks
optimized for decays into a Z boson and a third-generation
Standard Model quark is presented, using the full Run 2
dataset corresponding to 139fb−1 of pp collisions at
s=13TeV, collected in 2015–2018 with the ATLAS detector at
the Large Hadron Collider. The targeted final state is
characterized by the presence of a Z boson with high
transverse momentum, reconstructed from a pair of
same-flavour leptons with opposite-sign charges, as well as
by the presence of b-tagged jets and
high-transverse-momentum large-radius jets reconstructed
from calibrated smaller-radius jets. Events with exactly two
or at least three leptons are used, which are further
categorized by the presence of boosted W, Z, and Higgs
bosons and top quarks. The categorization is performed using
a neural-network-based boosted object tagger to enhance the
sensitivity to signal relative to the background. No
significant excess above the background expectation is
observed and exclusion limits at $95\%$ confidence level are
set on the masses of the vector-like partners T and B of the
top and bottom quarks, respectively. The limits depend on
the branching ratio configurations and, in the case of
$100\%$ branching ratio for T→Zt and $100\%$ branching
ratio for B→Zb, this search sets the most stringent limits
to date, allowing mT>1.60TeV and mB>1.42TeV, respectively.},
keywords = {p p: scattering (INSPIRE) / p p: colliding beams (INSPIRE)
/ family: 3 (INSPIRE) / Z0: transverse momentum (INSPIRE) /
transverse momentum: high (INSPIRE) / quark: postulated
particle (INSPIRE) / quark: vector particle (INSPIRE) /
quark: pair production (INSPIRE) / quark: decay modes
(INSPIRE) / Z0: leptonic decay (INSPIRE) / jet: bottom
(INSPIRE) / bottom: particle identification (INSPIRE) / top:
particle identification (INSPIRE) / jet: transverse
momentum: high (INSPIRE) / branching ratio (INSPIRE) / final
state: ((n)jet dilepton) (INSPIRE) / final state: ((n)jet
3lepton) (INSPIRE) / background (INSPIRE) / ATLAS (INSPIRE)
/ calibration (INSPIRE) / sensitivity (INSPIRE) / CERN LHC
Coll (INSPIRE) / Higgs particle (INSPIRE) / singlet
(INSPIRE) / doublet (INSPIRE) / quark: mass: lower limit
(INSPIRE) / neural network (INSPIRE) / data analysis method
(INSPIRE) / experimental results (INSPIRE) / quark --> Z0
top (INSPIRE) / quark --> Z0 bottom (INSPIRE) / 13000
GeV-cms (INSPIRE)},
cin = {ATLAS},
ddc = {530},
cid = {I:(DE-H253)ATLAS-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611)},
pid = {G:(DE-HGF)POF4-611},
experiment = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2210.15413},
howpublished = {arXiv:2210.15413},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2210.15413;\%\%$},
UT = {WOS:001030510600001},
doi = {10.1016/j.physletb.2023.138019},
url = {https://bib-pubdb1.desy.de/record/588110},
}