Abstract
This article presents the sensitivity of the ATLAS 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 language | English |
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Article number | 232 |
Pages (from-to) | 1-25 |
Number of pages | 25 |
Journal | European Physical Journal C: Particles and Fields |
Volume | 76 |
Early online date | 26 Apr 2016 |
DOIs | |
Publication status | Published - May 2016 |