Aaboud, M;
Aad, G;
Abbott, B;
Abdinov, O;
Abeloos, B;
Abhayasinghe, DK;
Abidi, SH;
... Zwalinski, L; + view all
(2018)
Search for lepton-flavor-violating decays of the Z boson into a r lepton and a light lepton with the ATLAS detector.
Physical Review D
, 98
(9)
, Article 092010. 10.1103/PhysRevD.98.092010.
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Abstract
Direct searches for lepton flavor violation in decays of the Z boson with the ATLAS detector at the LHC are presented. Decays of the Z boson into an electron or muon and a hadronically decaying τ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb−1 at a center-of-mass energy of ffiffi s p ¼ 13 TeV. No statistically significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: BðZ → eτÞ < 5.8 × 10−5 and BðZ → μτÞ < 2.4 × 10−5. This is the first limit on BðZ → eτÞ with ATLAS data. The upper limit on BðZ → μτÞ is combined with a previous ATLAS result based on 20.3 fb−1 of proton-proton collision data at a center-of-mass energy of ffiffi s p ¼ 8 TeV and the combined upper limit at 95% confidence level is BðZ → μτÞ < 1.3 × 10−5
| Type: | Article |
|---|---|
| Title: | Search for lepton-flavor-violating decays of the Z boson into a r lepton and a light lepton with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.98.092010 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.98.092010 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Particles & Fields, Physics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10063384 |
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