Search for lepton-flavor-violating decays of the Z boson into a r lepton and a light lepton with the ATLAS detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10391075" target="_blank" >RIV/00216208:11320/18:10391075 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/18:00329318 RIV/68407700:21340/18:00329318 RIV/68407700:21670/18:00329318 RIV/61989592:15310/18:73590826
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.98.092010" target="_blank" >https://doi.org/10.1103/PhysRevD.98.092010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.98.092010" target="_blank" >10.1103/PhysRevD.98.092010</a>

Result language
angličtina
Original language name
Search for lepton-flavor-violating decays of the Z boson into a r lepton and a light lepton with the ATLAS detector
Original language description
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 r 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 root 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 -> e tau) < 5.8 x 10(-5) and B(Z -> mu tau) < 2.4 x 10(-5). This is the first limit on B(Z -> e tau) with ATLAS data. The upper limit on 13(Z -> mu tau) is combined with a previous ATLAS result based on 20.3 fb(-1) of proton protoncollision data at a center-of-mass energy of root s = 8 TeV and the combined upper limit at 95% confidence level is B(Z -> mu tau) < 1.3 x 10(-5).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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