Evidence of hbð2PÞ → ϒð1SÞη Decay and Search for hb1P;2P → ϒ1Sπ0 with the Belle Detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494054" target="_blank" >RIV/00216208:11320/24:10494054 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cF~wZt-ACM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cF~wZt-ACM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.133.261901" target="_blank" >10.1103/PhysRevLett.133.261901</a>

Result language
angličtina
Original language name
Evidence of hbð2PÞ → ϒð1SÞη Decay and Search for hb1P;2P → ϒ1Sπ0 with the Belle Detector
Original language description
We report the first evidence for the hbð2PÞ RIGHTWARDS ARROW ϒð1SÞη transition with a significance of 3.5 standarddeviations. The decay branching fraction is measured to be B1/2hbð2PÞ RIGHTWARDS ARROW ϒð1SÞη 1/4ð7.1þ3.7-3.2 0.8Þ x 10-3, which is noticeably smaller than expected. We also set upper limits on π0transitions of B1/2hbð2PÞ RIGHTWARDS ARROW ϒð1SÞπ0 < 1.8 x 10-3, and B1/2hbð1PÞ RIGHTWARDS ARROW ϒð1SÞπ0 < 1.8 x 10-3, at the 90%confidence level. These results are obtained with a 131.4 fb-1 data sample collected near the ϒð5SÞresonance with the Belle detector at the KEKB asymmetric-energy eþe- collider.
Czech name
—
Czech description
—

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
<a href="/en/project/GA22-18469S" target="_blank" >GA22-18469S: Studies of the Beyond Standard Model phenomena in the flavor sector with the Belle II Experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)