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

The ATLAS collaboration

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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.].

Original languageEnglish
Article number118
JournalJournal of High Energy Physics
Volume2023
Issue number7
DOIs
Publication statusPublished - Jul 2023

Keywords

  • Beyond Standard Model
  • Hadron-Hadron Scattering
  • Tau Physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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