论文标题
部分可观测时空混沌系统的无模型预测
Investigations on the light hadron decays of $Z_b(10610)$ and $Z_b(10650)$
论文作者
论文摘要
$ z_b（10610）/z_b（10650）$的轻体衰减过程为我们提供了一种研究其性质和衰减机制的方法。在这项工作中，我们使用有效的Lagrangian方法评估了$ Z_B（10610）/Z_B（10650）\至VP $（10650）\（10650）\（$ V $和$ p $），分别用于Light vector和Pseudoscalar Mesons），其中考虑了中间底部的Meson Triangle loops的贡献。在我们的计算中，$ z_b（10610）$和$ z_b（10650）$被认为是$ b \ bar {b}^*+c.c. $和$ b^*\ bar {b}^*$分子状态。 $ z_b（10610）\ rightArrow VP $的预测分支比率约为$ 10^{ - 2} $，而分支比为$ z_b（10650）\ rightArrow VP $的订单为$ 10^{ - 3} $。此外，研究了$ z_b（10610）/z_b（10650）$在混合$η-η-η-η^\ prime $ $θ_p$之间的这些比率之间的依赖性，这可能是实验的良好数量。希望这里的计算可以通过未来的实验进行测试。
The light hadron decay processes of $Z_b(10610)/Z_b(10650)$ provide us a way to study their nature and decay mechanism. In this work, we evaluate the branching ratios of $Z_b(10610)/Z_b(10650) \to VP$ ($V$ and $P$ stand for light vector and pseudoscalar mesons, respectively) using an effective Lagrangian approach, in which the contributions of intermediate bottomed meson triangle loops are considered. In our calculations, the $Z_b(10610)$ and $Z_b(10650)$ are regarded as $B\bar{B}^*+c.c.$ and $B^*\bar{B}^*$ molecular states, respectively. The predicted branching ratios of $Z_b(10610)\rightarrow VP$ are about in the order of $10^{-2}$, while the branching ratios of $Z_b(10650)\rightarrow VP$ are in the order of $10^{-3}$. Furthermore, the dependence of these ratios between different decay modes of $Z_b(10610)/Z_b(10650)$ on the mixing $η-η^\prime$ angle $θ_P$ is investigated, which may be a good quantity for the experiments. It is hoped that the calculations here could be tested by future experiments.
