Probing lepton flavour violation via neutrinoless τ → 3μ decays with the ATLAS detector

The ATLAS Collaboration

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This article presents the sensitivity of theATLAS experiment to the lepton-flavour-violating decays of τ → 3μ. A method utilising the production of τ leptons via W → τν decays is used. This method is applied to the sample of 20.3 fb−1 of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. No event is observed passing the selection criteria,and the observed (expected) upper limit on the τ lepton branching fraction into three muons,Br(τ → 3μ),is 3.76 × 10−7 (3.94 × 10−7) at 90 % confidence level.

Original languageEnglish
Article number232
JournalEuropean Physical Journal C
Volume76
Issue number5
DOIs
Publication statusPublished - Jan 1 2016

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Flavors
leptons
Detectors
detectors
decay
Experiments
center of mass
muons
confidence
collisions
sensitivity
energy

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Probing lepton flavour violation via neutrinoless τ → 3μ decays with the ATLAS detector. / The ATLAS Collaboration.

In: European Physical Journal C, Vol. 76, No. 5, 232, 01.01.2016.

Research output: Contribution to journalArticle

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abstract = "This article presents the sensitivity of theATLAS experiment to the lepton-flavour-violating decays of τ → 3μ. A method utilising the production of τ leptons via W → τν decays is used. This method is applied to the sample of 20.3 fb−1 of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. No event is observed passing the selection criteria,and the observed (expected) upper limit on the τ lepton branching fraction into three muons,Br(τ → 3μ),is 3.76 × 10−7 (3.94 × 10−7) at 90 {\%} confidence level.",
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AB - This article presents the sensitivity of theATLAS experiment to the lepton-flavour-violating decays of τ → 3μ. A method utilising the production of τ leptons via W → τν decays is used. This method is applied to the sample of 20.3 fb−1 of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. No event is observed passing the selection criteria,and the observed (expected) upper limit on the τ lepton branching fraction into three muons,Br(τ → 3μ),is 3.76 × 10−7 (3.94 × 10−7) at 90 % confidence level.

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