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



Aad, G, Abbott, B, Abbott, DC, Abeling, K, Abidi, SH, Aboulhorma, A, Abramowicz, H, Abreu, H, Abulaiti, Y, Abusleme Hoffman, AC
et al (show 2889 more authors) (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 1126-6708, 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. [Figure not available: see fulltext.].

Item Type: Article
Uncontrolled Keywords: Beyond Standard Model, Hadron-Hadron Scattering, Tau Physics
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 29 Aug 2023 08:12
Last Modified: 23 May 2026 07:39
DOI: 10.1007/JHEP07(2023)118
Open Access URL: https://link.springer.com/article/10.1007/JHEP07(2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3172371
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