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

Barton, Adam Edward and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Evelina Vassileva and Dearnaley, William and Fox, Harald and Grimm, Kathryn Ann Tschann and Henderson, Robert Charles William and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin Eamonn and Love, Peter Allan and Skinner, Malcolm and Smizanska, Maria and Walder, James William and Wharton, Andy (2016) Probing lepton flavour violation via neutrinoless τ⟶3μ decays with the ATLAS detector. European Physical Journal C: Particles and Fields, 76 (5). ISSN 1434-6044

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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.

Item Type: Journal Article
Journal or Publication Title: European Physical Journal C: Particles and Fields
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 84076
Deposited By: ep_importer_pure
Deposited On: 18 Jan 2017 12:10
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2019 02:34
URI: https://eprints.lancs.ac.uk/id/eprint/84076

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