Search for rare decays B+ → Ds() + η, Ds () + (K)over-bar0, D+η, and D+K0

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476453" target="_blank" >RIV/00216208:11320/23:10476453 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=qXWjVeNYh6" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=qXWjVeNYh6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.107.L031101" target="_blank" >10.1103/PhysRevD.107.L031101</a>

Result language
angličtina
Original language name
Search for rare decays B+ → Ds(*) + η, Ds (*) + (K)over-bar0, D+η, and D+K0
Original language description
We present a study of rare decay modes B+->. D(s)(+)h(0), B+-> D-s(*)+h(0) and B+ -> D(+)h(0), where h(0) denotes the neutral meson eta or K-0, using a data sample of (772 +/- 10) x 10(6) B (B) over bar events produced at the.(sic) (4S) resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We find no evidence for these decays, so we set upper limits at the 90% confidence level on the branching fractions of B+ -> D(s)(+)h(0), D(s)(*)(+)h(0), and D(+)h(0) decay modes. Along with these rare decay modes, we report improved measurements of the color-suppressed decay branching fractions B((B) over bar (0)->. D-0 eta) = (26.6 +/- 1.2 +/- 2.1) x 10(-5) and B((B) over bar (0) -> D-0(K) over bar (0)) = (5.6 +/- 0.5 +/- 0.2) x 10(-5). The first and second quoted uncertainties are statistical and systematic, respectively.
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
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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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