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Probing lepton flavour violation via neutrinoless tau -> 3 mu decays with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 2867
2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 5, 232Article in journal (Refereed) Published
Abstract [en]

This article presents the sensitivity of the ATLAS experiment to the lepton-flavour-violating decays of tau -> 3 mu. A method utilising the production of t leptons via W -> tau nu 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 tau lepton branching fraction into three muons, Br(tau -> 3 mu), is 3.76 x 10(-7) (3.94 x 10(-7)) at 90 % confidence level.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2016. Vol. 76, no 5, 232
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Physical Sciences
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URN: urn:nbn:se:kth:diva-187903DOI: 10.1140/epjc/s10052-016-4041-9ISI: 000374991300004OAI: oai:DiVA.org:kth-187903DiVA: diva2:932247
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QC 20160601

Available from: 2016-06-01 Created: 2016-06-01 Last updated: 2016-06-01Bibliographically approved

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Lund-Jensen, BengtSidebo, EdvinStrandberg, Jonas
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