Probing lepton flavour violation via neutrinoless <i>τ</i> → 3<i>μ</i> decays with the ATLAS detector

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

Authors	ATLAS Collaboration G. Aad R. Aben I. Angelozzi S. Bentvelsen D. Berge G.J. Bobbink K. Bos L. Brenner A.P. Colijn P. de Jong L. Brenner P. Butti A.P. Colijn P. de Jong P. Ferrari E. Koffeman F. Hartjes N.P. Hessey P. Kluit E. Koffeman F. Linde G. Sabato D. Salek H. van der Graaf I. van Vulpen W. Verkerke J.C. Vermeulen M. Vreeswijk H. Weits
Publication date	05-2016
Journal	European Physical Journal C
Article number	232
Volume \| Issue number	76 \| 5
Number of pages	25
Organisations	Faculty of Science (FNWI) - Institute of Physics (IoP) Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF) Faculty of Science (FNWI)
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 x 10^-7 (3.94 x 10^-7) at 90% confidence level.
Document type	Article
Language	English
Published at	https://doi.org/10.1140/epjc/s10052-016-4041-9
Downloads	s10052-016-4041-9 (Final published version)
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