Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector

UNSPECIFIED (2023) Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics, 2023 (7): 118. ISSN 1029-8479

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Journal of High Energy Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
?? nuclear and high energy physics ??
ID Code:
203389
Deposited By:
Deposited On:
06 Sep 2023 10:55
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 00:08