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

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Probing lepton flavour violation via neutrinoless τ → 3μ decays with the ATLAS detector. European physical journal. C - particles and fields, 76(5) EDP Sciences 10.1140/epjc/s10052-016-4041-9

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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 (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

11 Aug 2017 15:22

Last Modified:

13 Aug 2017 02:16

Publisher DOI:

10.1140/epjc/s10052-016-4041-9

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99985

URI:

https://boris.unibe.ch/id/eprint/99985

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