Search for $Z^{+}_{s1}$ and $Z^{+}_{s2}$ strangeonium-like structures
Search for $Z^{+}_{s1}$ and $Z^{+}_{s2}$ strangeonium-like structures
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DOI：
10.1103/physrevd.85.116007
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发表时间：
2012-01
影响因子：
5
通讯作者：
Jian-Rong Zhang;L. Gan;Ming-qiu Huang
中科院分区：
文献类型：
--
作者：
Jian-Rong Zhang;L. Gan;Ming-qiu Huang
理论上，从一个有效的拉格朗日计算中可以假设存在两个带电荷的类奇异子分子态$Z^{+}_{s1}$和$Z^{+}}_{s2}$，它们分别具有$K\bar{K}^{*}$和$K^{*}\bar{K}^{*}$的构型。在QCD和规则框架下，我们预测$Z^{+}_{s1}$ （$K\bar{K}^{*}$）和$Z^{+}}_{s2}$ （$K^{*}\bar{K}^{*}$）的质量分别为$1.85\pm0.14 GeV$和$2.02\pm0.15 GeV$，均高于各自的两个介子阈值。我们建议在今后的实验中对这两种带电的类奇异子结构进行实际的探索。
Theoretically, it has been presumed from an effective Lagrangian calculation that there could exist two charged strangeonium-like molecular states $Z^{+}_{s1}$ and $Z^{+}_{s2}$, with $K\bar{K}^{*}$ and $K^{*}\bar{K}^{*}$ configurations respectively. In the framework of QCD sum rules, we predict that masses of $Z^{+}_{s1}$ ($K\bar{K}^{*}$) and $Z^{+}_{s2}$ ($K^{*}\bar{K}^{*}$) are $1.85\pm0.14 GeV$ and $2.02\pm0.15 GeV$ respectively, which are both above their respective two meson thresholds. We suggest to put in practice the search for these two charged strangeonium-like structures in future experiments.