Title: First measurements of the branching fractions of $J/ψ\to Ξ^0\barΛK^0_S+c.c.$, $J/ψ\to Ξ^0\barΣ^0 K^0_S+c.c.$, and $J/ψ\to Ξ^0\barΣ^- K^++c.c.$ Show Chinese title

Title: $J/ψ\to Ξ^0\barΛK^0_S+c.c.$、$J/ψ\to Ξ^0\barΣ^0 K^0_S+c.c.$和$J/ψ\to Ξ^0\barΣ^- K^++c.c.$的分支分数的首次测量

Abstract: By analyzing $(10087 \pm 44)\times10^6$ $J/\psi$ events collected with the BESIII detector at the BEPCII, the decays $J/\psi\to \Xi^0\bar\Lambda K^0_S+c.c.$, $J/\psi\to \Xi^0\bar\Sigma^0 K^0_S+c.c.$, and $J/\psi\to \Xi^0\bar\Sigma^- K^++c.c.$ are observed for the first time. Their branching fractions are determined to be $\mathcal{B}(J/\psi\to \Xi^0\bar\Lambda K^0_S+c.c.)=(3.76\pm0.14\pm 0.22)\times10^{-5}$, $\mathcal{B}(J/\psi\to \Xi^0\bar\Sigma^0 K^0_S+c.c.)=(2.24\pm0.32\pm 0.22)\times10^{-5}$, and $\mathcal{B}(J/\psi\to \Xi^0\bar\Sigma^- K^++c.c.)=(5.64\pm0.17\pm 0.27)\times10^{-5}$, where the first uncertainties are statistical and the second systematic. Show Chinese abstract

Abstract: 通过分析在BEPCII上使用BESIII探测器收集的$(10087 \pm 44)\times10^6$ $J/\psi$ 事件，首次观察到衰变$J/\psi\to \Xi^0\bar\Lambda K^0_S+c.c.$、$J/\psi\to \Xi^0\bar\Sigma^0 K^0_S+c.c.$和$J/\psi\to \Xi^0\bar\Sigma^- K^++c.c.$。 它们的分支分数分别确定为$\mathcal{B}(J/\psi\to \Xi^0\bar\Lambda K^0_S+c.c.)=(3.76\pm0.14\pm 0.22)\times10^{-5}$，$\mathcal{B}(J/\psi\to \Xi^0\bar\Sigma^0 K^0_S+c.c.)=(2.24\pm0.32\pm 0.22)\times10^{-5}$，和$\mathcal{B}(J/\psi\to \Xi^0\bar\Sigma^- K^++c.c.)=(5.64\pm0.17\pm 0.27)\times10^{-5}$，其中第一个不确定度是统计的，第二个是系统性的。