论文标题
$ z_c（4020/4025）$的奇怪堂兄作为tetraquark state
The strange cousin of the $Z_c(4020/4025)$ as tetraquark state
论文作者
论文摘要
由$ z_c（3900/3885）$和$ z_ {cs}（3985/4000）$的类似属性的动机，我们暂时将$ z_c（4020/4025）$作为$ a \ a \ bar {a} $ - type-type-type-type-charm tetraquark contraight-pc}表示AxialVector Diquark表示，并探索$ a \ bar {a} $ - 键入Tetraquark状态，毫无奇怪，奇怪，并以QCD总规则以一致的方式带有隐藏式键。然后，我们探索了三体强度衰变的hadronic耦合常数，而不是奇怪的，并且通过基于严格的夸克 - 哈德隆二元性的QCD总规则而奇怪，并获得了部分衰减宽度和总衰减宽度。目前的计算支持分配$ ZC（4020/4025）$作为$ a \ bar {a} $ - 键入带有$ j^{pc} = 1^{+ - } $的tetraquark状态，而对其奇怪的表亲$ z_ {cs} $状态的预测可能会与实验性数据相处。
Motivated by the analogous properties of the $Z_c(3900/3885)$ and $Z_{cs}(3985/4000)$, we tentatively assign the $Z_c(4020/4025)$ as the $A\bar{A}$-type hidden-charm tetraquark state with the $J^{PC}=1^{+-}$, where the $A$ denotes the axialvector diquark states, and explore the $A\bar{A}$-type tetraquark states without strange, with strange and with hidden-strange via the QCD sum rules in a consistent way. Then we explore the hadronic coupling constants in the two-body strong decays of the tetraquark states without strange and with strange via the QCD sum rules based on rigorous quark-hadron duality, and acquire the partial decay widths and total decay widths. The present calculations support assigning the $Z_c(4020/4025)$ as the $A\bar{A}$-type tetraquark state with the $J^{PC}=1^{+-}$, while the predictions for its strange cousin $Z_{cs}$ state can be confronted to the experimental data in the future.
