Alexander Ekman
Doctoral student
Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector
Author
Summary, in English
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.]. © 2023, The Author(s).
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2023
Language
English
Publication/Series
Journal of High Energy Physics
Volume
2023
Issue
7
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Beyond Standard Model
- Hadron-Hadron Scattering
- Tau Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479