论文标题
在相关夸克模型中
Masses of doubly heavy tetraquarks $T_{QQ^\prime}$ in a relativized quark model
论文作者
论文摘要
在目前的工作中，双重繁重的tetraquarks $ t_ {qq^\ prime} $的质谱是在相关夸克模型中系统地研究的。在变化方法中解决了包括库仑电势，限制电势，自旋旋转相互作用和相对论校正在内的四体系统。我们的结果表明，$ ij^p = 01^+$ $ $ $ bb \ bar u \ bar d $状态比相关的$ \ bar b \ b \ b \ b $和$ \ bar b \ bar b \ bar b \ bar b^*$阈值低于54 meV，这表明坚固和电磁衰减都被禁止，因此这是一个稳定的一个。它的较大的隐藏颜色成分和小的均方根半径表明它是一种紧凑的四夸克，而不是松散结合的分子或点状的diquark-antidiquark结构。我们对双重繁重的四夸克人的预测可能会为未来的实验搜索提供有价值的信息。
In the present work, the mass spectra of doubly heavy tetraquarks $T_{QQ^\prime}$ are systematically investigated in a relativized quark model. The four-body systems including the Coulomb potential, confining potential, spin-spin interactions, and relativistic corrections are solved within the variational method. Our results suggest that the $IJ^P=01^+$ $bb \bar u \bar d$ state is 54 MeV below the relevant $\bar B \bar B$ and $\bar B \bar B^*$ thresholds, which indicates that both strong and electromagnetic decays are forbidden, and thus this state can be a stable one. Its large hidden color component and small root mean square radius demonstrate that it is a compact tetraquark rather than a loosely bound molecule or point-like diquark-antidiquark structure. Our predictions of the doubly heavy tetraquarks may provide valuable information for future experimental searches.
