TY  - SER
AU  - Aad,G.
AU  - Abbott,B.
AU  - Chelkov,G.A.
AU  - Khodinov,A.
AU  - Parida,B.
AU  - Tsybychev,D.
AU  - Vaniachine,A.
AU  - Aaboud,M.
TI  - Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector
KW  - ATLAS, детектор
KW  - Большой адронный коллайдер
KW  - протон-протонные столкновения
KW  - бозоны
KW  - лептоны
KW  - статьи в журналах
N1  - Библиогр.: 58 назв
N2  - 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 √s=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: B(Z→eτ)<5.8×10−5 and B(Z→μτ)<2.4×10−5. This is the first limit on B(Z→eτ) with ATLAS data. The upper limit on B(Z→μτ) 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 √s=8  TeV and the combined upper limit at 95% confidence level is B(Z→μτ)<1.3×10−5
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000658444
ER  -