Measurement of CP asymmetries in B0 → η0K0 S decays at Belle II
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494115" target="_blank" >RIV/00216208:11320/24:10494115 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=flOOjzwc4d" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=flOOjzwc4d</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.112002" target="_blank" >10.1103/PhysRevD.110.112002</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of CP asymmetries in B0 → η0K0 S decays at Belle II
Original language description
We describe a measurement of charge-parity (CP) violation asymmetries in B0 RIGHTWARDS ARROW η0K0S decaysusing Belle II data. We consider η0 RIGHTWARDS ARROW ηðRIGHTWARDS ARROWγγÞπþπ- and η0 RIGHTWARDS ARROW ρðRIGHTWARDS ARROWπþπ-Þγ decays. The data were collectedat the SuperKEKB asymmetric-energy eþe- collider between the years 2019 and 2022, and containð387 6Þ x 106 bottom-antibottom meson pairs. We reconstruct 829 35 signal decays and extract theCP violating parameters from a fit to the distribution of the proper-decay-time difference between the twoB mesons. The measured direct and mixing-induced CP asymmetries are Cη0K0S 1/4 -0.19 0.08 0.03and Sη0K0S 1/4 þ0.67 0.10 0.03, respectively, where the first uncertainties are statistical and the secondare systematic. These results are in agreement with current world averages and standard model predictions.
Czech name
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Czech description
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Classification
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
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
112002
UT code for WoS article
001381817100002
EID of the result in the Scopus database
2-s2.0-85211498622