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Search for lepton-favour violation in high-mass dilepton fnal states using 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector ATLAS Collaboration

Abstract

A search is performed for a heavy particle decaying into diferent-favour, dilepton fnal states, using 139 fb−1 of proton-proton collision data at √ s = 13 TeV collected in 2015–2018 by the ATLAS detector at the Large Hadron Collider. Final states with electrons, muons and hadronically decaying tau leptons are considered (eµ, eτ or µτ ). No signifcant excess over the Standard Model predictions is observed. Upper limits on the production cross-section are set as a function of the mass of a Z ′ boson, a supersymmetric τ -sneutrino, and a quantum black-hole. The observed 95% CL lower mass limits obtained on a typical benchmark model Z ′ boson are 5.0 TeV (eµ), 4.0 TeV (eτ ), and 3.9 TeV (µτ ), respectively.

Item Metadata

Title
Search for lepton-favour violation in high-mass dilepton fnal states using 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector
Creator
ATLAS Collaboration
Publisher
Springer Berlin Heidelberg
Date Issued
2023-10-13
Description
A search is performed for a heavy particle decaying into diferent-favour, dilepton fnal states, using 139 fb−1 of proton-proton collision data at √ s = 13 TeV collected in 2015–2018 by the ATLAS detector at the Large Hadron Collider. Final states with electrons, muons and hadronically decaying tau leptons are considered (eµ, eτ or µτ ). No signifcant excess over the Standard Model predictions is observed. Upper limits on the production cross-section are set as a function of the mass of a Z ′ boson, a supersymmetric τ -sneutrino, and a quantum black-hole. The observed 95% CL lower mass limits obtained on a typical benchmark model Z ′ boson are 5.0 TeV (eµ), 4.0 TeV (eτ ), and 3.9 TeV (µτ ), respectively.
Subject
Beyond Standard Model; Exotics; Flavour Physics; Hadron-Hadron Scattering
Genre
Article
Type
Text
Language
eng
Date Available
2024-01-02
Provider
Vancouver : University of British Columbia Library
Rights
Attribution 4.0 International (CC BY 4.0)
DOI
10.14288/1.0438364
URI
http://hdl.handle.net/2429/87028
Affiliation
Science, Faculty of; TRIUMF; Non UBC; Physics and Astronomy, Department of
Citation
Journal of High Energy Physics. 2023 Oct 13;2023(10):82
Publisher DOI
10.1007/JHEP10(2023)082
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Copyright Holder
The Author(s)
Rights URI
http://creativecommons.org/licenses/by/4.0/
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Attribution 4.0 International (CC BY 4.0)