https://scholars.lib.ntu.edu.tw/handle/123456789/606727
標題: | Measurements of the branching fractions of Ξc0→ΛKS0, Ξc0→Σ0KS0, and Ξc0→Σ+K- decays at Belle | 作者: | Li Y WEI-SHU HOU et al. |
公開日期: | 2022 | 卷: | 105 | 期: | 1 | 來源出版物: | Physical Review D | 摘要: | Using the entire data sample of 980 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider, we present measurements of the branching fractions of the Cabibbo-favored decays Ξc0→ΛKS0, Ξc0→Σ0KS0, and Ξc0→Σ+K-. Taking the decay Ξc0→Ξ-π+ as the normalization mode, we measure the branching fraction ratio B(Ξc0→ΛKS0)/B(Ξc0→Ξ-π+)=0.229±0.008±0.012 with improved precision, and measure the branching fraction ratios B(Ξc0→Σ0KS0)/B(Ξc0→Ξ-π+)=0.038±0.006±0.004 and B(Ξc0→Σ+K-)/B(Ξc0→Ξ-π+)=0.123±0.007±0.010 for the first time. Taking into account the branching fraction of the normalization mode, the absolute branching fractions are determined to be B(Ξc0→ΛKS0)=(3.27±0.11±0.17±0.73)×10-3, B(Ξc0→Σ0KS0)=(0.54±0.09±0.06±0.12)×10-3, and B(Ξc0→Σ+K-)=(1.76±0.10±0.14±0.39)×10-3. The first and second uncertainties above are statistical and systematic, respectively, while the third ones arise from the uncertainty of the branching fraction of Ξc0→Ξ-π+. Published by the American Physical Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122722199&doi=10.1103%2fPhysRevD.105.L011102&partnerID=40&md5=9e4dee44b20dd86cfa63f91e5eab5552 https://scholars.lib.ntu.edu.tw/handle/123456789/606727 |
ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.105.L011102 |
顯示於: | 物理學系 |
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