论文标题
探索X的分子场景（4160）
Exploring the molecular scenario of X(4160)
论文作者
论文摘要
在这项工作中，我们研究了分子框架中介子$ x（4160）$的衰减。通过使用有效的Lagrangian方法，我们将$ X（4160）\的宽度计算为J/ψX$，$ d^*\ bar {d}^*$，$ d^*\ bar {d} $和$ d \ bar {d \ bar {d} $通过分子场景中的Triangle Loop机制。基于合成条件，确定了$ x（4160）$和$ d_s^*\ bar {d} _s^*$分子状态之间的耦合。使用的其他耦合常数在现象学上是确定的。衰减宽度的计算表明，$ d^*\ bar {d}^*$衰减模式具有较大的分支比率。这些预测可以看作是$ x（4160）$的炭分配的测试。
In this work, we investigate the decays of meson $X(4160)$ in the molecular frame. By using an effective lagrangian approach, we calculate the widths of $X(4160)\to J/ψϕ$, $D^*\bar{D}^*$, $D^*\bar{D}$ and $D\bar{D}$ through the triangle loop mechanism in the molecular scenario. Based on the compositeness condition, the coupling between $X(4160)$ and the $D_s^*\bar{D}_s^*$ molecular state is determined. The other coupling constants used are determined phenomenologically. The calculation of the decay widths shows that the $D^*\bar{D}^*$ decay mode has a larger branching ratio. These predictions can be seen as a test for the charmonium assignment of $X(4160)$.
