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Torsten ÅKESSON

Torsten Åkesson

Professor

Torsten ÅKESSON

Search for Lepton-Flavor Violation in Z -Boson Decays with τ Leptons with the ATLAS Detector

Author

  • G. Aad
  • T.P.A. Åkesson
  • E.E. Corrigan
  • C. Doglioni
  • J. Geisen
  • E. Hansen
  • V. Hedberg
  • G. Jarlskog
  • B. Konya
  • E. Lytken
  • K.H. Mankinen
  • C. Marcon
  • J.U. Mjörnmark
  • G.A. Mullier
  • R. Poettgen
  • E. Skorda
  • O. Smirnova
  • L. Zwalinski

Summary, in English

A search for lepton-flavor-violating Z→eτ and Z→μτ decays with pp collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139 fb-1 of Run 2 pp collisions at s=13 TeV and is combined with the results of a similar ATLAS search in the final state in which the τ lepton decays hadronically, using the same data set as well as Run 1 data. The addition of leptonically decaying τ leptons significantly improves the sensitivity reach for Z→ℓτ decays. The Z→ℓτ branching fractions are constrained in this analysis to B(Z→eτ)

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration

Publishing year

2021

Language

English

Publication/Series

Physical Review Letters

Volume

127

Issue

27

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • Decay (organic)
  • Tellurium compounds
  • ATLAS detectors
  • Branching fractions
  • Confidence levels
  • Data set
  • Final state
  • Lepton flavour violations
  • Lepton-flavor
  • Z Bosons
  • Bosons
  • article
  • boson
  • flavor
  • lepton

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-9007