论文标题
解码$ z_ {cs}（3985）$的性质，并在手性有效领域理论中建立了被带电的重质量状态的频谱
Decoding the nature of $Z_{cs}(3985)$ and establishing the spectrum of charged heavy quarkoniumlike states in chiral effective field theory
论文作者
论文摘要
我们研究了手性有效场理论框架中新观察到的炭状状态$ z_ {cs}（3985）$。 $ \ bar {d} _sd^\ ast/\ bar {d}^\ ast_sd $ system的相互作用内核的计算，直到具有显式手性动力学的近代领先顺序。从$ z_c（3900）$数据中提取的拟合参数作为输入，$ z_ {cs}（3985）$的质量，宽度和事件分布与实验测量非常一致。我们的研究强烈支持$ z_ {cs}（3985）$作为$ z_c（3900）$在su（3）$ _ f $ symetry和$ \ bar {d} _sd^\ ast/\ ast/\ bar {d} _st/\ bar {d}^\ ast_sd $ the Moarcular Enational andynece andynece nytys andynectimal的合作率。我们精确地预测了$ \ bar {d} _s^\ ast d^\ ast $，$ b^\ ast_s \ bar {b}/b_s \ bar {b}^\ ast $ a ast $ and $ b_s^\ ast conterry的共鸣{用$ i（j^p）$量子数$ 1（1^+）$和$ \ frac {1} {2} {2}（1^+）$的charmonliumliike和dottomeniumlike状态。
We study the newly observed charmoniumlike state $Z_{cs}(3985)$ in the framework of chiral effective field theory. The interaction kernel of the $\bar{D}_sD^\ast/\bar{D}^\ast_sD$ system is calculated up to the next-to-leading order with the explicit chiral dynamics. With the fitted parameters extracted from the $Z_c(3900)$ data as inputs, the mass, width and event distributions of the $Z_{cs}(3985)$ are very consistent with the experimental measurements. Our studies strongly support the $Z_{cs}(3985)$ as the partner of the $Z_c(3900)$ in the SU(3)$_f$ symmetry and the $\bar{D}_sD^\ast/\bar{D}^\ast_sD$ molecular resonance with the same dynamical origin as the other charged heavy quarkoniumlike states. We precisely predict the resonance parameters of the unobserved states in $\bar{D}_s^\ast D^\ast$, $B^\ast_s \bar{B}/B_s\bar{B}^\ast$ and $B_s^\ast\bar{B}^\ast$ systems, and establish a complete spectrum of the charged charmoniumlike and bottomoniumlike states with the $I(J^P)$ quantum numbers $1(1^+)$ and $\frac{1}{2}(1^+)$, respectively.
