Production of Xb in Υ(5S,6S)→γXb Radiative Decays
Production of Xb in Υ(5S,6S)→γXb Radiative Decays
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Upsilon(5S, 6S) 中 X-b 的产生 -> 伽玛 X-b 辐射衰变
DOI：
10.1155/2016/3729050
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Ying Zheng
中科院分区：
文献类型：
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作者：
Qi Wu;Gang Li;Fenglan Shao;QianwenWang;Ruiqin Wang;Yawei Zhang;Ying Zheng
在这项工作中，我们研究了$UPSilon(5S，6S)\to\Gamma X_b$过程中$X_b$的产生，其中$X_b$被假设为$B{\bar B}^*$分子状态下的底钼扇区的$X(3872)$的对应物。我们使用基于重夸克对称性的有效拉格朗日来研究重散射机制，并计算它们的产额比。结果表明，在合理的截止参数范围内，(5S，6S)与X_b的产量比为$10^-5}$。相当大的产生率可能会在未来的实验中获得，比如即将到来的BelleII，这将为了解奇异状态$X_b$的内部结构提供重要线索。
In this work, we investigate the production of $X_b$ in the process $\Upsilon(5S,6S)\to \gamma X_b$, where $X_b$ is assumed to be the counterpart of $X(3872)$ in the bottomonium sector as a $B {\bar B}^*$ molecular state. We use the effective Lagrangian based on the heavy quark symmetry to explore the rescattering mechanism and calculate their production ratios. Our results have shown that the production ratios for the $\Upsilon(5S,6S) \to \gamma X_b$ are orders of $10^{-5}$ with reasonable cutoff parameter range $\alpha \simeq 2\sim 3$. The sizeable production ratios may be accessible at the future experiments like forthcoming BelleII, which will provide important clues to the inner structures of the exotic state $X_b$.