论文标题
完全沉重的四夸克的光谱行为
Spectroscopy behavior of fully heavy tetraquarks
论文作者
论文摘要
受到2020年LHCB的$ x（6900）$的观察以及CMS和ATLAS在DI-$ j/ψ$不变质量谱中的结果所激发的，在这项工作中，我们从系统地研究了组成夸克模型中地面完全沉重的Tetraquark州的所有可能配置。通过我们的计算，我们介绍了它们的光谱行为，例如结合能，最低的梅森 - 梅森阈值，特定波动功能，磁矩，过渡磁矩，辐射衰减宽度，重排宽度，内部质量贡献，内部质量贡献，（抗）quarks之间的相对长度以及四个价值（反）的空间分布（抗）。我们找不到完全沉重的四夸克系统的稳定的S波状态。我们希望我们的结果对于进一步探索实验中完全繁重的四夸克州有价值。
Stimulated by the observation of the $X(6900)$ from LHCb in 2020 and the recent results from CMS and ATLAS in the di-$J/ψ$ invariant mass spectrum, in this work we systemically study all possible configurations for the ground fully heavy tetraquark states in constituent quark model. By our calculation, we present their spectroscopy behaviors like binding energy, lowest meson-meson thresholds, specific wave function, magnetic moment, transition magnetic moment, radiative decay width, rearrangement strong width ratio, internal mass contributions, relative lengths between (anti)quarks, and the spatial distribution of four valence (anti)quarks. We cannot find stable S-wave state for the fully heavy tetraquark system. We hope that our results are valuable to further explore fully heavy tetraquark states in experiment.
