Masses of fully heavy tetraquarks QQQbarQbar in an extended relativized quark model
Masses of fully heavy tetraquarks QQQbarQbar in an extended relativized quark model
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扩展相对化夸克模型中的全重四夸克质量 QQQ
DOI：
10.1140/epjc/s10052-020-08454-1
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Yu-Bing Dong
中科院分区：
文献类型：
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作者：
Qi-Fang Lv;Dian-Yong Chen;Yu-Bing Dong
受LHCb合作组最近对可能的全粲四夸克态的测量的启发，我们在扩展的相对论夸克模型中研究了全重四夸克态的质量谱。我们的估计表明，在6.4GeV附近的宽结构应该包含一个或多个四夸克态，而在6.9GeV附近的窄结构可以被归类为系统的第一径向激发。此外，利用四夸克和介子的波函数，定性地讨论了四夸克到重夸克偶素对的强衰变，这一结果可由LHCb和CMS合作组进一步检验。
Inspired by recent measurement of possible fully charmed tetraquarks in LHCb Collaboration, we investigate the mass spectra of fully heavy tetraquarksin an extended relativized quark model. Our estimations indicate that the broad structure around 6.4 GeV should contain one or more ground states fortetraquarks, while the narrow structure near 6.9 GeV can be categorized as the first radial excitation ofsystem. Moreover, with the wave functions of the tetraquarks and mesons, the strong decays of tetraquarks into heavy quarkonium pair are qualitatively discussed, which can be further checked by the LHCb and CMS Collaborations.