论文标题
$ z_ {cs}（3985）$是$ \ bar {d} _s^*d $和$ \ bar {d} _sd^*$的分子状态？
Can $Z_{cs}(3985)$ be a molecular state of $\bar{D}_s^*D$ and $\bar{D}_sD^*$ ?
论文作者
论文摘要
我们研究了BESIII合作在单玻色 - 交换模型中最近观察到的$ z_ {cs}（3985）$状态，假设它是$ \ bar {d} _s _s^{（*）} d^{（*）} d^{（*）d^{（*）} $ molecule，它具有Quark Content $ c \ bar $ c \ bar $ c} $ c} q} $ D $。结果表明，一次验证的可能性太弱，无法动态生成$ \ bar {d} _s d $，$ \ bar {d}^*_ s d $，以及$ \ bar {d} _sd^*$状态，而对于$ \ bar {D} d^*_ s D^*d^*s d douries of Bar {d^*s d^*s d^*s d^*s d^*s d^*_ s d^*_ s d^*梅夫。我们得出的结论是，观察到的$ z_ {cs}（3985）$状态，如果通过进一步的实验确认，则不能是$ \ bar {d} _s _s d^*$ and $ \ bar {d} _s _s^*d $的纯辐射分子状态，并且可以由大型综合自然组成。
We study the $Z_{cs}(3985)$ state recently observed by the BESIII Collaboration in the one-boson-exchange model, assuming that it is a $\bar{D}_s^{(*)}D^{(*)}$ molecule, which has the quark content $c\bar{c}s\bar{q}$ with $q = u$, $d$. It is shown that the one-boson-exchange potential is too weak to generate dynamcally $\bar{D}_s D$, $\bar{D}^*_s D$, and $\bar{D}_sD^*$ states, while for the case of $\bar{D}^*_s D^*$, very loosely bound states are likely, with binding energies of the order of several MeV. We conclude that, the observed $Z_{cs}(3985)$ state, if confirmed by further experiments, cannot be a pure hadronic molecular state of $\bar{D}_s D^*$ and $\bar{D}_s^*D$ and could consist of large components of compact nature.
