Measurement of the τ-lepton mass with the Belle II experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476861" target="_blank" >RIV/00216208:11320/23:10476861 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=BVDQNuJQmC" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=BVDQNuJQmC</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.108.032006" target="_blank" >10.1103/PhysRevD.108.032006</a>

Result language
angličtina
Original language name
Measurement of the τ-lepton mass with the Belle II experiment
Original language description
We present a measurement of the τ-lepton mass using a sample of about 175 million eþe- RIGHTWARDS ARROW τþτ-events collected with the Belle II detector at the SuperKEKB eþe- collider at a center-of-mass energyof 10.579 GeV. This sample corresponds to an integrated luminosity of 190 fb-1. We use the kinematicedge of the τ pseudomass distribution in the decay τ- RIGHTWARDS ARROW π-πþπ-ντ and measure the τ mass to be1777.09 0.08 0.11 MeV=c2, where the first uncertainty is statistical and the second systematic. Thisresult is the most precise to date.
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
—
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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