Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
复制标题
全魅力四夸克和全底四夸克的更高质谱
DOI：
10.1103/physrevd.104.116029
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发表时间：
2021
影响因子：
5
通讯作者：
Qiang Zhao
中科院分区：
文献类型：
--
作者：
Feng-Xiao Liu;Ming-Sheng Liu;Xian-Hui Zhong;Qiang Zhao
在这项工作中，我们计算了非相对论势夸克模型中全夸克态和全底四夸克态的更高质谱。除了最高态之外，波完全魅力/底部四夸克态位于质量范围内。大多数波态与高位波态高度重叠。波完全魅力/底部四夸克态的质量预计在范围内。波四夸克态的质量范围覆盖了波态的大部分质量范围和波态的整个质量范围。最近在LHCb双不变质谱中观察到的窄结构可能是由-、or-、or-波态引起的。模糊结构可能是由最高波态、两个低位波态和/或质量约为 7.2 GeV 的高位波态和/或引起的。虽然很明显，潜在夸克模型计算比在二不变质谱中观察到的结构预测了更多的状态，但我们的计算将有助于进一步了解这些全重四夸克态在与基于显式夸克模型波函数的开放通道的强磁性相互作用中的特性。
In this work, we calculate the higher mass spectra for the- and-wave fully-charmed and fully-bottom tetraquark states in a nonrelativistic potential quark model. The-wave fully-charmed/bottom tetraquark states lie in the mass range of, apart from the higheststate. Most of the-wave states highly overlap with the high-lying-wave states. The masses for the-wave fully-charmed/bottom tetraquark states are predicted to be in the range of. The mass range for the-wave tetraquark states cover most of the mass range of the-wave states and the whole mass range of the-wave states. The narrow structurerecently observed at LHCb in the di-invariant mass spectrum may be caused by the-, or-, or-wavestates. The vague structuremay be caused by the highest-wave state, two low-lying-wave statesand, and/or the high-lying-wave states with masses around 7.2 GeV and, or. While it is apparent that the potential quark model calculations predict more states than the structures observed in the di-invariant mass spectrum, our calculations will help further understanding of the properties of these fully-heavy tetraquark states in their strong and magnetic interactions with open channels based on explicit quark model wave functions.