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

  • Author(s): Aad, G
  • Abbott, B
  • Abdallah, J
  • Abdinov, O
  • Abeloos, B
  • Aben, R
  • Abolins, M
  • AbouZeid, OS
  • Abraham, NL
  • Abramowicz, H
  • Abreu, H
  • Abreu, R
  • Abulaiti, Y
  • Acharya, BS
  • Adamczyk, L
  • Adams, DL
  • Adelman, J
  • Adomeit, S
  • Adye, T
  • Affolder, AA
  • Agatonovic-Jovin, T
  • Agricola, J
  • Aguilar-Saavedra, JA
  • Ahlen, SP
  • Ahmadov, F
  • Aielli, G
  • Akerstedt, H
  • Åkesson, TPA
  • Akimov, AV
  • Alberghi, GL
  • Albert, J
  • Albrand, S
  • Verzini, MJA
  • Aleksa, M
  • Aleksandrov, IN
  • Alexa, C
  • Alexander, G
  • Alexopoulos, T
  • Alhroob, M
  • Aliev, M
  • Alimonti, G
  • Alison, J
  • Alkire, SP
  • Allbrooke, BMM
  • Allen, BW
  • Allport, PP
  • Aloisio, A
  • Alonso, A
  • Alonso, F
  • Alpigiani, C
  • Alstaty, M
  • Gonzalez, BA
  • Piqueras, DÁ
  • Alviggi, MG
  • Amadio, BT
  • Amako, K
  • Coutinho, YA
  • Amelung, C
  • Amidei, D
  • Santos, SPAD
  • Amorim, A
  • Amoroso, S
  • Amundsen, G
  • Anastopoulos, C
  • Ancu, LS
  • Andari, N
  • Andeen, T
  • Anders, CF
  • Anders, G
  • Anders, JK
  • Anderson, KJ
  • Andreazza, A
  • Andrei, V
  • Angelidakis, S
  • Angelozzi, I
  • Anger, P
  • Angerami, A
  • Anghinolfi, F
  • Anisenkov, AV
  • Anjos, N
  • Annovi, A
  • Antonelli, M
  • Antonov, A
  • Antos, J
  • et al.
Abstract

© 2017, CERN for the benefit of the ATLAS collaboration. 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→ eτ, H→ μτ, and Z→ μτ. 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- 1at a centre-of-mass energy of 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→ eτ) < 1.04 % , Br(H→ μτ) < 1.43 % , and Br(Z→ μτ) < 1.69 × 10- 5.

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