Evidence for the singly Cabibbo-suppressed decay $$ {\Omega}_c^0\to {\Xi}^{-}{\pi}^{+} $$ and search for $$ {\Omega}_c^0\to {\Xi}^{-}{K}^{+} $$ and Ω−K+ decays at Belle
Evidence for the singly Cabibbo-suppressed decay $$ {\Omega}_c^0\to {\Xi}^{-}{\pi}^{+} $$ and search for $$ {\Omega}_c^0\to {\Xi}^{-}{K}^{+} $$ and Ω−K+ decays at Belle
复制标题
单卡比博抑制衰变的证据 $$ {Omega}_c^0 o {Xi}^{-}{pi}^{ } $$ 并搜索 $$ {Omega}_c^0 o
DOI：
10.1007/jhep01(2023)055
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发表时间：
2023
影响因子：
5.4
通讯作者：
Ayad, R.
中科院分区：
文献类型：
--
作者：
Han, X.;Jia, S.;Yuan, L.;Shen, C. P.;Adachi, I.;Ahn, J. K.;Aihara, H.;Asner, D. M.;Aushev, T.;Ayad, R.
利用KEKB非对称能量e+e−对撞机上的贝尔探测器收集的980Fb−1的数据样本，首次研究了Ω−K+和双重Cabibbo抑制的衰变。有证据表明→Ξ−π+模式中存在信号，其重要性为4.5σ，包括系统不确定性。分支分数与归一化模式→Ω−π+的比率被测量为
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 decaysand Ω− K+ and the doubly Cabibbo-suppressed decay. Evidence for ansignal in the→ Ξ− π+ mode is reported with a significance of 4. 5σ including systematic uncertainties. The ratio of branching fractions to the normalization mode→ Ω− π+ is measured to be