Measurement of CP asymmetries in B0 → K0 SK0 SK0S decays at Belle II

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494113" target="_blank" >RIV/00216208:11320/24:10494113 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ps526blR_n" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ps526blR_n</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.109.112020" target="_blank" >10.1103/PhysRevD.109.112020</a>

Result language
angličtina
Original language name
Measurement of CP asymmetries in B0 → K0 SK0 SK0S decays at Belle II
Original language description
We report a measurement of decay-time-dependent charge-parity (CP) asymmetries in B0 RIGHTWARDS ARROWK0SK0SK0S decays. We use 387 x 106 BB- pairs collected at the ϒð4SÞ resonance with the Belle IIdetector at the SuperKEKB asymmetric-energy electron-positron collider. We reconstruct 220signal events and extract the CP-violating parameters S and C from a fit to the distribution of thedecay-time difference between the two B mesons. The resulting confidence region is consistent withprevious measurements in B0 RIGHTWARDS ARROW K0SK0SK0S and B0 RIGHTWARDS ARROW ðc-cÞK0 decays and with predictions based on thestandard model.
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
<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

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