论文标题
$ x（4140）$和$ x（4160）$的作用在$ b^+ \ to j/ψϕk^+ $的反应中
The role of $X(4140)$ and $X(4160)$ in the reactions of $B^+ \to J/ψϕK^+$
论文作者
论文摘要
我们已经研究了从阈值到约4250 meV的$ j/ψϕ $质量分布，$ b^+\ to j/ψϕk^+$，通过考虑$ x（4140）$的贡献，宽度较窄，以及$ x（4160）$ state $ x（4140）$。我们的结果表明，$ d^*_ s \ bar {d}^*_ s $阈值的尖缘结构与$ x（4160）$ state的分子性质相关。
We have studied the $J/ψϕ$ mass distribution of the process $B^+\to J/ψϕK^+$ from the threshold to about 4250 MeV, by considering the contribution of the $X(4140)$ with a narrow width, together with the $X(4160)$ state. Our results show that the cusp structure at the $D^*_s\bar{D}^*_s$ threshold is tied to the molecular nature of the $X(4160)$ state.
