论文标题
Lattice QCD的Hidden-Charm Hexaquarks
Hidden-charm Hexaquarks from Lattice QCD
论文作者
论文摘要
我们介绍了一项晶格QCD研究，该研究基于ClqCD与220-300mev范围内的PION质量合作的四个仪表配置，该QUARK内容$ USC \ usc \ usc \ bar {d} \ bar {d} \ bar {d} \ bar {s} \ bar {c} $。四个具有量子数量的运算符$ 0^{++}，0^{ - +}，1^{++} $和$ 1^{ - } $分别构建以插入Hexaquarks。在验证了普通黑德子的光谱和分散关系之后，我们计算了六夸克的质量，并将结果推断到物理倾斜质量和连续性极限。我们发现，四个六夸克的质量都低于$ξ_c\ barξ_c$ threshold，而$ 0^{ - +} $ hexaquark位于$η_ck^+k^ - $ threshold附近。这些结果将有助于将来的实验搜索和对多Quark国家性质的深入了解。
We present a lattice QCD study of hidden-charm hexaquarks with quark content $usc\bar{d}\bar{s}\bar{c}$ based on four ensembles of gauge configurations generated by CLQCD Collaboration with pion mass in the range of 220-300MeV. Four operators with quantum numbers $0^{++}, 0^{-+}, 1^{++}$ and $1^{--}$ respectively are constructed to interpolate the hexaquarks. After validating the spectrum and the dispersion relation for ordinary hadrons, we calculate the masses of the hexaquarks and extrapolate the results to the physical pion mass and the continuum limit. We find that the masses of the four hexaquarks are all below the $Ξ_c \bar Ξ_c$ threshold, while the $0^{-+}$ hexaquark lies around the $η_c K^+K^-$ threshold. These results will be helpful for experimental searches in future and for a deep understanding of the nature of multiquark states.
