论文标题
$ qq \ bar {s} \ bar {s} $ tetraquarks在手性夸克模型中
$QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
论文作者
论文摘要
低洼的$ s $ -wave $ qq \ bar {s} \ bar {s} $（$ q = c，b $）具有$ ij^p = 00^+$，$ 01^+$和$ 02^+$的tetraquark状态，在Chiral Complect farge的框架中已系统地研究通过通常扩展的变分方法（高斯膨胀方法）来考虑每个结构，包括介子 - 梅森，二夸克 - 抗烷型和K型配置，以及四体扇形中的所有可能的颜色通道。对于$ cc \ bar {s} \ bar {s} $和$ bb \ bar {s} \ bar {s} $ tetraquarks，带有$ cc \ bar {s} $ a {同时，在$ ij^p = 00^+$，$ 01^+$和$ 02^+$状态中也发现了$ cb \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {s} \ bar {$ 02^+$ state也有狭窄的共振状态。这些结果证实了在非相互作用的强子 - 哈德隆阈值上方找到具有质量$ \ sim \，0.6 \，\ text {gev} $的质量分子的可能性。
The low-lying $S$-wave $QQ\bar{s}\bar{s}$ ($Q=c, b$) tetraquark states with $IJ^P=00^+$, $01^+$ and $02^+$ are systematically investigated in the framework of complex scaling range of chiral quark model. Every structure including meson-meson, diquark-antidiquark and K-type configurations, and all possible color channels in four-body sector are considered by means of a commonly extended variational approach, Gaussian expansion method. Several narrow and wide resonance states are obtained for $cc\bar{s}\bar{s}$ and $bb\bar{s}\bar{s}$ tetraquarks with $IJ^P=00^+$ and $02^+$. Meanwhile, narrow resonances for $cb\bar{s}\bar{s}$ tetraquarks are also found in $IJ^P=00^+$, $01^+$ and $02^+$ states. These results confirm the possibility of finding hadronic molecules with masses $\sim\,0.6\,\text{GeV}$ above the noninteracting hadron-hadron thresholds.
