Doubly hidden-charm/bottom QQQQ tetraquark states
Doubly hidden-charm/bottom QQQQ tetraquark states
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DOI：
10.1051/epjconf/201818202028
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发表时间：
2018-03
期刊：
影响因子：
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通讯作者：
Wei Chen;Hua-Xing Chen;Xiang Liu;T. Steele;Shi-Lin Zhu
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文献类型：
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作者：
Wei Chen;Hua-Xing Chen;Xiang Liu;T. Steele;Shi-Lin Zhu
我们通过开发矩和法则方法来研究 cccc 和 bbbb 四夸克态的质谱。我们的结果表明 bbbb 四夸克位于 ηb(1S) ηb(1S ) 阈值以下。它们可能很稳定并且非常狭窄。双隐魅态 cccc 的质量高于两个魅介子的自发解离阈值。我们建议在 J/ψ/J/ψ 和 ψc(1S) ψc(1S) 通道中搜索此类状态。
We study the mass spectra for the cccc and bbbb tetraquark states by developing a moment sum rule method. Our results show that the bbbb tetraquarks lie below the threshold of ηb(1S) ηb(1S ). They are probably stable and very narrow. The masses for the doubly hidden-charm states cccc are higher than the spontaneous dissociation thresholds of two charmonium mesons. We suggest to search for such states in the J/Ψ/J/Ψ and Ψc(1S) Ψc(1S) channels.