Observation of the decay B0 → J/ψω at Belle II

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510146" target="_blank" >RIV/00216208:11320/25:10510146 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=o87b1rsff7" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=o87b1rsff7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.111.032012" target="_blank" >10.1103/PhysRevD.111.032012</a>

Result language
angličtina
Original language name
Observation of the decay B0 → J/ψω at Belle II
Original language description
We measure the branching fraction of the decay B-0 -> J/psi omega using data collected with the Belle II detector at the SuperKEKB collider. The data contain (387 +/- 6) x 10(6) B (B) over bar meson pairs produced in energy-asymmetric e(+) e(-) collisions at the Upsilon(4S) resonance. The measured branching fraction B(B-0 -> J/psi omega) = (2.16 +/- 0.30 +/- 0.14) x 10(-5), where the first uncertainty is statistical and the second is systematic, is more precise than previous results and constitutes the first observation of the decay with a significance of 6.5 standard deviations.
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
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)