Measurements of the branching fractions of Ξ plus c → Σ+K0S, Ξ+c → Ξ0π+, and Ξ plus c → Ξ0K+at Belle and Belle II
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510991" target="_blank" >RIV/00216208:11320/25:10510991 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-ogMx.K-rK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-ogMx.K-rK</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2025)195" target="_blank" >10.1007/JHEP08(2025)195</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Measurements of the branching fractions of Ξ plus c → Σ+K0S, Ξ+c → Ξ0π+, and Ξ plus c → Ξ0K+at Belle and Belle II
Popis výsledku v původním jazyce
Using 983.0 fb-1 and 427.9 fb-1 data samples collected with the Belle and Belle II detectors at the KEKB and SuperKEKB asymmetric energy e+ e- colliders, respectively, we present studies of the Cabibbo-favored Xi+c decays Xi+c -> Sigma+ K0S and Xi+c -> Xi 0 pi+, and the singly Cabibbo-suppressed decay Xi+c -> Xi 0K+. The ratios of branching fractions of Xi+c -> Sigma+ K0S and Xi+c -> Xi 0K+ relative to that of Xi+c -> Xi- pi+ pi+ are measured for the first time, while the ratio B(Xi+c -> Xi 0p+)/B(Xi+c -> Xi- pi+ pi+) is also determined and improved by an order of magnitude in precision. The measured branching fraction ratios are B(Xi+c -> Sigma+ K0S) B(Xi+c -> Xi-p+ p+) = 0.067 +/- 0.007 +/- 0.003, B Xi+c -> Xi 0 pi+) B(Xi+c -> Xi-pi+ pi+) = 0.251 +/- 0.005 +/- 0.010, B(Xi+c -> Xi 0K+) B(Xi+c -> Xi-pi+ pi+) = 0.017 +/- 0.003 +/- 0.001. Additionally, the ratio B(Xi+c -> Xi 0K+)/B(Xi+c -> Xi 0 pi+) is measured to be 0.068 +/- 0.010 +/- 0.004. Here, the first and second uncertainties are statistical and systematic, respectively. Multiplying the ratios by the branching fraction of the normalization mode, B(Xi+c -> Xi- pi+ pi+) = (2.9 +/- 1.3)%, we obtain the following absolute branching fractions B(Xi+c -> Sigma+ K0S) = (0.194 +/- 0.021 +/- 0.009 +/- 0.087)%, B(Xi+c -> Xi 0p+) = (0.728 +/- 0.014 +/- 0.027 +/- 0.326)%, B(Xi+c -> Xi 0K+) = (0.049 +/- 0.007 +/- 0.003 +/- 0.022)%, where the third uncertainties are from B(Xi+c -> Xi- pi+pi+).
Název v anglickém jazyce
Measurements of the branching fractions of Ξ plus c → Σ+K0S, Ξ+c → Ξ0π+, and Ξ plus c → Ξ0K+at Belle and Belle II
Popis výsledku anglicky
Using 983.0 fb-1 and 427.9 fb-1 data samples collected with the Belle and Belle II detectors at the KEKB and SuperKEKB asymmetric energy e+ e- colliders, respectively, we present studies of the Cabibbo-favored Xi+c decays Xi+c -> Sigma+ K0S and Xi+c -> Xi 0 pi+, and the singly Cabibbo-suppressed decay Xi+c -> Xi 0K+. The ratios of branching fractions of Xi+c -> Sigma+ K0S and Xi+c -> Xi 0K+ relative to that of Xi+c -> Xi- pi+ pi+ are measured for the first time, while the ratio B(Xi+c -> Xi 0p+)/B(Xi+c -> Xi- pi+ pi+) is also determined and improved by an order of magnitude in precision. The measured branching fraction ratios are B(Xi+c -> Sigma+ K0S) B(Xi+c -> Xi-p+ p+) = 0.067 +/- 0.007 +/- 0.003, B Xi+c -> Xi 0 pi+) B(Xi+c -> Xi-pi+ pi+) = 0.251 +/- 0.005 +/- 0.010, B(Xi+c -> Xi 0K+) B(Xi+c -> Xi-pi+ pi+) = 0.017 +/- 0.003 +/- 0.001. Additionally, the ratio B(Xi+c -> Xi 0K+)/B(Xi+c -> Xi 0 pi+) is measured to be 0.068 +/- 0.010 +/- 0.004. Here, the first and second uncertainties are statistical and systematic, respectively. Multiplying the ratios by the branching fraction of the normalization mode, B(Xi+c -> Xi- pi+ pi+) = (2.9 +/- 1.3)%, we obtain the following absolute branching fractions B(Xi+c -> Sigma+ K0S) = (0.194 +/- 0.021 +/- 0.009 +/- 0.087)%, B(Xi+c -> Xi 0p+) = (0.728 +/- 0.014 +/- 0.027 +/- 0.326)%, B(Xi+c -> Xi 0K+) = (0.049 +/- 0.007 +/- 0.003 +/- 0.022)%, where the third uncertainties are from B(Xi+c -> Xi- pi+pi+).
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10300 - Physical sciences
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Svazek periodika
2025
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
20
Strana od-do
195
Kód UT WoS článku
001579030000001
EID výsledku v databázi Scopus
2-s2.0-105017143026