Evidence for the singly Cabibbo-suppressed decay Oc0 ? (sic)-p+ and search for Oc0 ? (sic)-K+ and O-K+ decays at Belle

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476477" target="_blank" >RIV/00216208:11320/23:10476477 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cNHSLm1DW~" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cNHSLm1DW~</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP01(2023)055" target="_blank" >10.1007/JHEP01(2023)055</a>

Result language
angličtina
Original language name
Evidence for the singly Cabibbo-suppressed decay Oc0 ? (sic)-p+ and search for Oc0 ? (sic)-K+ and O-K+ decays at Belle
Original language description
Using a data sample of 980 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we study for the first time the singly Cabibbo-suppressed decays omega(0)(c) -(sic) -pi(+) and omega K--(+) and the doubly Cabibbo-suppressed decay omega(0)(c) -(sic)K--(+). Evidence for an Q0 c signal in the omega(0)(c) -E-pi+ mode is reported with a significance of 4.5 sigma including systematic uncertainties. The ratio of branching fractions to the normalization mode omega(0)(c) -omega(-)pi(+ )is measured to beB(omega(0)(c) -(sic)(-)pi(+))/B(omega(0)(c) -Q-pi+) = 0.253 +/- 0.052(stat.) +/- 0.030(syst.).No significant signals of omega(0)(c) -(sic)K--(+) and omega K--(+) modes are found. The upper limits at 90% confidence level on ratios of branching fractions are determined to beB(omega(0)(c) -> (sic)K--(+))/B(omega(0)(c) -> omega-pi(+)) < 0.070 andB(omega(0)(c) -> omega K--(+))/B(omega(0)(c) -> omega-pi(+)) < 0.29.
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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