论文标题
通过QCD Sum规则对$ x（3960）$及相关Tetraquark分子状态的分析
Analysis of the $X(3960)$ and related tetraquark molecular states via the QCD sum rules
论文作者
论文摘要
在这项工作中，我们研究了$ d \ bar {d} $，$ dd $，$ d \ bar {d} _s $，$ dd_s $，$ d_s \ bar {d} _s $和$ d_sd_s $ d_sd_s $ tetraquark分子状态，带有$ j^{pc} = 0^^$ qud}预测$ m_ {d_s \ bar {d} _s} = 3.98 \ pm0.10 \，\ rm {gev} $与实验值$ m_ {x（3960）} = 3956 = 3956 \ pm 5 \ pm 5 \ pm 10 \，\，\ rh，\ rh，来自$ x（3960）$作为$ d_s^+d_s^ - $ j^{pc} = 0^{++} $的分子状态。我们考虑了我们以前在四个夸克国家的作品，这些句子由两个颜色中性簇组成，并获取了基态隐藏式和双障碍四夸克分子状态的质谱。
In this work, we study the $D\bar{D}$, $DD$, $D\bar{D}_s$, $DD_s$, $D_s\bar{D}_s$ and $D_sD_s$ tetraquark molecular states with the $J^{PC}=0^{++}$ via the QCD sum rules. The prediction $M_{D_s\bar {D}_s} = 3.98\pm0.10\, \rm{GeV}$ is in very good agreement with the experimental value $M_{X(3960)} = 3956 \pm 5\pm 10 \,\rm{MeV}$ from the LHCb collaboration and supports assigning the $X(3960)$ as the $D_s^+D_s^-$ molecular state with the $J^{PC}=0^{++}$. We take account of our previous works on the four-quark states consisting of two color-neutral clusters, and acquire the mass spectrum of the ground state hidden-charm and doubly-charm tetraquark molecular states.
