论文标题
组成夸克模型中的全精度四夸克
Full-heavy tetraquarks in constituent quark models
论文作者
论文摘要
The full-heavy tetraquarks $bb\bar{b}\bar{b}$ and $cc\bar{c}\bar{c}$ are systematically investigated within the chiral quark model and the quark delocalization color screening model.考虑了两个结构，即梅森 - 梅森和diquark-antidiquark。对于全生物$ bb \ bar {b} \ bar {b} $系统，手性夸克模型中的两个结构中没有任何界限状态或共振状态，而质量大约19.25 gev和量子的共鸣，量子大约是$ j^{p} = 0^{p} = 0^{+} $ j {+} $ 1^$}定位颜色筛选模型。对于全链$ cc \ bar {c} \ bar {c} $ systems，结果在两个夸克模型中是定性一致的。在梅森 - 梅森配置中找不到界定状态，而在diquark-antidiquark配置中可能存在共振状态，质量在$ 6.3 $ GEV至$ 7.4 $ GEV之间，量子数量$ J^{p} = 0^{+} $ j^{+} $，$ 1^{+1^{+} {+} {+} $} $} $} $} $} $} $} $}。 diquark和反quark之间的分离表明这些状态可能是紧凑的共振状态。所有这些全联邦共鸣状态与LHCB协作的最新结果一致，值得在实验中进行搜索。
The full-heavy tetraquarks $bb\bar{b}\bar{b}$ and $cc\bar{c}\bar{c}$ are systematically investigated within the chiral quark model and the quark delocalization color screening model. Two structures, meson-meson and diquark-antidiquark, are considered. For the full-beauty $bb\bar{b}\bar{b}$ systems, there is no any bound state or resonance state in two structures in the chiral quark model, while the wide resonances with masses around 19.25 GeV and the quantum numbers $J^{P}=0^{+}$, $1^{+}$, and $2^{+}$ are possible in the quark delocalization color screening model. For the full-charm $cc\bar{c}\bar{c}$ systems, the results are qualitative consistent in two quark models. No bound state can be found in the meson-meson configuration, while in the diquark-antidiquark configuration there may exist the resonance states, with masses range between $6.3$ GeV to $7.4$ GeV, and the quantum numbers $J^{P}=0^{+}$, $1^{+}$, and $2^{+}$. And the separation between the diquark and the antidiquark indicates that these states may be the compact resonance states. All these full-charm resonance states are consistent with the latest results at LHCb collaboration and are worth searching in the experiments further.
