@article{oai:tsukuba.repo.nii.ac.jp:00049351,
 author = {原, 和彦 and HARA, Kazuhiko and 金, 信弘 and KIM, Shinhong(nobuhiro) and 大川, 英希 and OKAWA, Hideki and 佐藤, 構二 and SATO, Koji and 受川, 史彦 and UKEGAWA, Fumihiko and ATLA Collaboration},
 issue = {9},
 journal = {Physical review D},
 month = {Nov},
 note = {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.},
 title = {Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector},
 volume = {98},
 year = {2018},
 yomi = {ハラ, カズヒコ and キム, シンホン and オオカワ, ヒデキ and サトウ, コウジ and ウケガワ, フミヒコ}
}