Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector

Date

2017

Authors

Aad, G.
Albert, Justin
David, Claire
Elliot, Alison A.
Fincke-Keeler, J.
Hamano, Kenji
Hill, Ewan Chin
Keeler, Richard
Kowalewski, Robert
Kuwertz, E. S.

Journal Title

Journal ISSN

Volume Title

Publisher

The European Physical Journal C

Abstract

Direct searches for lepton flavour violation in decays of the Higgs and Z bosons with the ATLAS detector at the LHC are presented. The following three decays are considered: H -> e tau, H -> mu tau, and Z -> mu tau. The searches are based on the data sample of proton-proton collisions collected by the ATLAS detector corresponding to an integrated luminosity of 20.3 fb(-1) at a centre-of-mass energy of root s = 8 TeV. No significant excess is observed, and upper limits on the lepton-flavour-violating branching ratios are set at the 95% confidence level: Br(H -> e tau) < 1.04%, Br(H -> mu tau) < 1.43%, and Br(Z -> mu tau) < 1.69 x 10(-5).

Description

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Citation

Aad, G.; Abbott, B.; Abdallah, O.; Abdinov, O.; Abeloos, B.; Aben, R. … & Zwalinski, L. (2017). Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector. The European Physical Journal C, 77(2), article 70. DOI: 10.1140/epjc/s10052-017-4624-0