论文标题
新观察到的$ z_ {cs}（3985）^ - $ state：在真空和密集的介质中
The newly observed $ Z_{cs}(3985)^- $ state: in vacuum and a dense medium
论文作者
论文摘要
我们报告了新观察到的带电的开放式奇怪$ z_ {cs}（3985）^ - $ state besiii Collaboration的一些属性。分配量子数$ j^{p} = 1^{+} $和夸克构成$ c \ bar c s \ bar u $，并将其视为著名$ z_c（3900）$ state的奇怪合作伙伴，我们估计$ z_ {cs}（cs}}（3985）（3985）^ - $ resonance in Vacuum and Compriencations comporiestion and comporiestion and comporiestion and comporiestion and comporiestion comporiestion and comportions comporiesition。我们还研究了具有有限密度的介质中的质量，电流耦合和矢量自我的能量。我们对真空质量的结果与实验数据很好。我们在真空中也估计该状态的B-partner的质量和当前耦合。对于它的质量，我们得到$ m_ {z_ {bs}} = 10732^{+97} _ { - 46}〜\ mbox {mev} $，可以通过其他非驱动方法以及未来的实验检查。我们介绍了$ z_ {cs}（3985）^ - $状态对密度的光谱参数的依赖性，并观察到这些参数随着密度的增加而线性更改。
We report on some properties of the newly observed charged hidden-charmed open strange $ Z_{cs}(3985)^- $ state by BESIII Collaboration. Assigning the quantum numbers $ J^{P} = 1^{+}$ and the quark composition $ c \bar c s\bar u $ and considering it as the strange partner of the famous $ Z_c(3900) $ state, we estimate the mass of the $ Z_{cs}(3985)^- $ resonance in vacuum and compare it with the experimental data. We also investigate its mass, current coupling and vector-self energy in a medium with finite density. Our result on the mass in vacuum agrees well with the experimental data. We estimate the mass and current coupling of the b-partner of this state, $ Z_{bs}$, in the vacuum as well. For its mass we get $ m_{Z_{bs}}= 10732^{+97}_{-46}~\mbox{MeV}$, which may be checked via other nonperturbative approaches as well as future experiments. We present the dependence of the spectroscopic parameters of $ Z_{cs}(3985)^- $ state on density and observe that these parameters are linearly changed with increasing in the density.
