Open Access BASE2017

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

Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Aben, R; Abolins, M; AbouZeid, O. S; Abraham, N. L; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y; Acharya, B. S; Adamczyk, L; Adams, D. L; Adelman, J; Adomeit, S; Adye, T; Affolder, A. A; Agatonovic-Jovin, T; Agricola, J; Aguilar-Saavedra, J. A; Ahlen, S. P; Ahmadov, F; Aielli, G; Akerstedt, H; Åkesson, T. P. A; Akimov, A. V; Alberghi, G. L; Albert, J; Albrand, S; Verzini, M. J. Alconada; Aleksa, M; Aleksandrov, I. N; Alexa, C; Alexander, G; Alexopoulos, T; Alhroob, M; Aliev, M; Alimonti, G; Alison, J; Alkire, S. P; Allbrooke, B. M. M; Allen, B. W; Allport, P. P; Aloisio, A; Alonso, A; Alonso, F; Alpigiani, C

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Abstract

Altres ajuts: We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of MINECO, Spain and EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union and CERCA Programme Generalitat de Catalunya. Funded by SCOAP3. ; 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: , , and . 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 at a centre-of-mass energy of TeV. No significant excess is observed, and upper limits on the lepton-flavour-violating branching ratios are set at the 95 confidence level: Br, Br, and Br.

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