Search for charged lepton flavor violating decays of Upsilon(1S)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10454497" target="_blank" >RIV/00216208:11320/22:10454497 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=t-3L~LsU30" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=t-3L~LsU30</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP05(2022)095" target="_blank" >10.1007/JHEP05(2022)095</a>

Result language
angličtina
Original language name
Search for charged lepton flavor violating decays of Upsilon(1S)
Original language description
We present a search for the charged lepton-flavor-violating decays Upsilon(1S) -> l(+/-)l'(-/+) and radiative charged lepton-flavour-violating decays Upsilon(1S) -> gamma l(+/-)l'(-/+) [l, l' = e, mu, tau] using the 158 million Upsilon(2S) sample collected by the Belle detector at the KEKB collider. This search uses Upsilon(1S) mesons produced in Upsilon(2S) -> pi(+)pi(-)Upsilon(1S) transitions. We do not find any significant signal, so we provide upper limits on the branching fractions at the 90% confidence level.
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
10300 - Physical sciences

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)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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