Search for third-generation vector-like leptons in $pp$ collisions at $\sqrt{s} = 13\,\text{TeV}$ with the ATLAS detector - INSPIRE

Search for third-generation vector-like leptons in $pp$ collisions at $\sqrt{s} = 13\,\text{TeV}$ with the ATLAS detector

ATLAS

Collaboration

Mar 9, 2023

48 pages

Published in:

JHEP 07 (2023) 118

Published: Jul 13, 2023

e-Print:

2303.05441 [hep-ex]

DOI:

10.1007/JHEP07(2023)118

Report number:

CERN-EP-2022-236

Experiments:

CERN-LHC-ATLAS

View in:

reference search31 citations

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Abstract: (Springer)

A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset corresponding to an integrated luminosity of 139 fb

^{−1}

of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal and background, a machine-learning classifier is used. No excess of events is observed beyond the Standard Model expectation. Using a doublet vector-like lepton model, vector-like leptons coupling to third-generation Standard Model leptons are excluded in the mass range from 130 GeV to 900 GeV at the 95% confidence level, while the highest excluded mass is expected to be 970 GeV.[graphic not available: see fulltext]

Note:

48 pages, author list starting on page 29, 6 figures, 11 tables, published as JHEP 07 (2023) 118. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2020-07/

Beyond Standard Model
Hadron-Hadron Scattering
Tau Physics
p p: colliding beams
family: 3
lepton: model
p p: scattering
lepton: coupling
lepton: vector particle
new particle

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