论文标题
$ \ bar {d}^{（*）} _ {s} d^{（*）} $分子状态，$ j^{p} = 1^{+} $
$\bar{D}^{(*)}_{s}D^{(*)}$ molecular state with $J^{P}=1^{+}$
论文作者
论文摘要
在本文中，我们构造了$ \ bar {d}^{（*）} _ {s} d^{（*）} $ - 分子型插值电流$ j _ {（\ pm）μ}（\ pm）μ}（x）$ with $ j^{p} = 1^{+emp sum和sum sum sum sum and sumpers and qumments uns and qunituce sum and qumment of sumpers and q. electromagnetic field, and study the processes of $Z_{(\pm)cs}$ to $η_{c}K^{*}$, $J/ψK$, $\bar{D}D^{*}_{s}$, and $\bar{D}^{*}D_{s}$ via three-point sum rules.数值为$ m_ {z _ {（\ pm）cs}}} = 3.99^{+0.17} _ { - 0.14}〜\ mbox {gev} $，并且美元$μ_{z _ {（\ pm）cs}} = 0.18^{+0.16} _ { - 0.09} 〜μ_ {n} $带有$μ__{n} $ $γ_{z _ {（+）cs}} = 17.47^{+12.70} _ { - 8.08} $，和$γ_{z _ {（ - ）cs}} = 13.86^{+10.37} {+10.37} _ { - 6.51} $。群众与最近测量的$ z_ {cs}（3985）$相一致。宽度与实验值兼容，$γ^{exp} _ {z_ {cs}}} =（12.8^{+5.3} _ { - 4.4} \ pm3.0）〜\ mbox {mev {mev} $。当将来面对实验数据时，磁矩和各种衰减模式可以帮助我们确定$ z_ {cs}（3985）$的内部结构。
In this paper, we construct $\bar{D}^{(*)}_{s}D^{(*)}$-molecule-type interpolating currents $J_{(\pm)μ}(x)$ with $J^{P}=1^{+}$, calculate the corresponding mass and magnetic moment using the QCD sum rule method and its extension in the weak electromagnetic field, and study the processes of $Z_{(\pm)cs}$ to $η_{c}K^{*}$, $J/ψK$, $\bar{D}D^{*}_{s}$, and $\bar{D}^{*}D_{s}$ via three-point sum rules. The numerical values are $m_{Z_{(\pm)cs}}=3.99^{+0.17}_{-0.14}~\mbox{GeV}$, and $λ_{Z_{(\pm)cs}}=2.07^{+0.28}_{-0.16}\times10^{-2}~\mbox{GeV}^{5}$, $μ_{Z_{(\pm)cs}}=0.18^{+0.16}_{-0.09}~μ_{N}$ with $μ_{N}$ the nucleon magneton, $Γ_{Z_{(+)cs}}=17.47^{+12.70}_{-8.08}$, and $Γ_{Z_{(-)cs}}=13.86^{+10.37}_{-6.51}$. The masses are in agreement with the recently measured value of $Z_{cs}(3985)$ by the BESIII Collaboration, $m^{exp}_{Z_{cs}}=(3982.5^{+1.8}_{-2.6}\pm2.1)~\mbox{MeV}$. The widths are compatible with the experimental value, $Γ^{exp}_{Z_{cs}}=(12.8^{+5.3}_{-4.4}\pm3.0)~\mbox{MeV}$. The magnetic moment and the various decay modes can help us to determine the inner structure of $Z_{cs}(3985)$ when being confronted with experimental data in the future.
