Measurements of the branching fractions of Ξc0→ΛKS0 , Ξc0→Σ0KS0 , and Ξc0→Σ+K− decays at Belle
Measurements of the branching fractions of Ξc0→ΛKS0 , Ξc0→Σ0KS0 , and Ξc0→Σ+K− decays at Belle
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δc0−δKS0 、δc0−δ0KS0 和 δc0−δK−δK 的支化分数的测量在 Belle 处衰减
DOI：
10.1103/physrevd.105.l011102
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发表时间：
2022
影响因子：
5
通讯作者：
Atmacan, H.
中科院分区：
文献类型：
--
作者：
Li, Y.;Cui, J. X.;Jia, S.;Shen, C. P.;Adachi, I.;Ahn, J. K.;Aihara, H.;Al Said, S.;Asner, D. M.;Atmacan, H.
利用KEKB不对称能量对撞机Belle探测器收集的全部数据样本，我们给出了cabibbo青睐衰变的分支分数，和。decayas标准化模式,我们测量分支分数比B(Ξc0→ΛKS0) / B(Ξc0→Ξ-π+)= 0.229±0.008±0.012与提高精度,并测量分支分数比B(Ξc0→Σ0 KS0) / B(Ξc0→Ξ-π+)= 0.038±0.006±0.004 B(Ξc0→Σ+ K -) / B(Ξc0→Ξ-π+)= 0.123±0.007±0.010第一次。考虑分支分数的标准化模式,绝对分支分数决定是B(Ξc0→ΛKS0) =(3.27±0.11±0.17±0.73)×三分,B(Ξc0→Σ0 KS0) =(0.54±0.09±0.06±0.12)×三分,和B(Ξc0→Σ+ K -) =(1.76±0.10±0.14±0.39)×三分。第一个不确定性和第二个不确定性分别是统计不确定性和系统不确定性，而第三个不确定性来自于的分支分数的不确定性。
Using the entire data sample ofcollected with the Belle detector at the KEKB asymmetric-energycollider, we present measurements of the branching fractions of the Cabibbo-favored decays,, and. Taking the decayas 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.