论文标题
$ z_ {cs}（3985）$的分析为轴向向量tetraquark state
Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
论文作者
论文摘要
在本文中，我们选择了颜色抗动物中的标量和轴向向量diquark操作员作为构造四夸克电流的基本构建块，并研究了diquark-antidiquark型axialvector tetraquark tetraquark tetraquark state $ c \ bar {c} u \ bar {c} u \ bar {s} $在qcd和qcd sum sul of qcd sum suls of q ccd sum prules中。预测的四夸克质量$ m_z = 3.99 \ pm0.09 \，\ rm {gev} $与实验值$ 3985.2^{+2.1} _ { - 2.0} _ { - 2.0} \ pm1.7 \，\ rm {mev} $从BESIIII IDESSITION，SUPPSITION besiii Indest satdes supportation， $ z_ {cs}（3985）$作为$ z_c（3900）$的堂兄，带量子数$ j^{pc} = 1^{+ - } $。我们考虑了淡淡的风味$ su（3）$破坏质量的效果，以估计diquark-antidiquark型的质谱隐藏式链链球形tetraquark状态根据先前的作品而具有陌生性。
In this paper, we choose the scalar and axialvector diquark operators in the color antitriplet as the fundamental building blocks to construct the four-quark currents and investigate the diquark-antidiquark type axialvector tetraquark states $c\bar{c}u\bar{s}$ in the framework of the QCD sum rules. The predicted tetraquark mass $M_Z=3.99\pm0.09\,\rm{GeV}$ is in excellent agreement with the experimental value $3985.2^{+2.1}_{-2.0}\pm1.7\,\rm{MeV}$ from the BESIII collaboration, which supports identifying the $Z_{cs}(3985)$ as the cousin of the $Z_c(3900)$ with the quantum numbers $J^{PC}=1^{+-}$. We take into account the light flavor $SU(3)$ mass-breaking effect to estimate the mass spectrum of the diquark-antidiquark type hidden-charm tetraquark states having the strangeness according to the previous works.
