论文标题
$ z_ {cs} $状态以及有效的田间理论中的hadronic分子和diquark-anti-diquark组件的混合物
The $Z_{cs}$ states and the mixture of hadronic molecule and diquark-anti-diquark components within effective field theory
论文作者
论文摘要
在这项工作中，我们构建了描述介子交互的拉格朗日，以便在研究$ z_ {cs} $状态时引入了diquark-anti-diquark组件以及分子成分。这样，问题就解决了，如果仅考虑$ \ bar {d}^{（*）} d_s^{（*）} $组件，则势力会被Ozi规则抑制。通过求解Bethe-Salpeter方程，我们发现$ z_ {cs}（4000）^+$可以解释为$ \ bar {d}^{*0} d_s^+$和$ \ bar {a} _} _ {cs} s_ {cs} s_ {cu} $ Components的混合物。此外，对于$ \ bar {d}^{*0} d_s^{*+}/\ bar {a} _ {cs} a_ {cu} $ system，$ 4208 \ $ pm 13i $ mev的极点，预计第二个riemann纸在第二个riemann表中，$ shys ys $ z_ ass+z_}+z_}+sy+z_}（4220）（4220） $ z_ {cs}（4220）^+$。由于$ z_ {cs}（4220）^+$的宽度的误差很大，因此预计将进一步测量。此外，预测了其他几个不同的旋转的两极。
In this work, we construct the Lagrangian describing meson-diquark interaction, such that the diquark-anti-diquark component as well as the molecular component is introduced when studying the $Z_{cs}$ states. In this way, the problem is solved that if only considering the $\bar{D}^{(*)}D_s^{(*)}$ components, the potentials are suppressed by OZI rule. Through solving the Bethe-Salpeter equation, we find that the $Z_{cs}(4000)^+$ can be explained as the mixture of $\bar{D}^{*0}D_s^+$ and $\bar{A}_{cs}S_{cu}$ components. Besides, for the $\bar{D}^{*0}D_s^{*+}/\bar{A}_{cs}A_{cu}$ system, the pole of $4208\pm 13i$ MeV on the second Riemann sheet is predicted, whose mass agrees with that of $Z_{cs}(4220)^+$ while the width is much smaller than $Z_{cs}(4220)^+$. Due to the large error of the $Z_{cs}(4220)^+$'s width, further measurements are expected. In addition, several other poles of different spins are predicted.
