论文标题
$ 0^{+} $完全掌握的tetraquark状态
$0^{+}$ fully-charmed tetraquark states
论文作者
论文摘要
由LHCB在$ J/ψ$ - pair不变的质谱中对结构的新观察的动机，可以将其归类为$ cc \ bar {c} \ bar {c} \ bar {c} $ tetraquark候选人，我们系统地研究$ 0^{+} $ 0^{+} $ flutly-flutl-Charmed tetraquark tetraquark cons cccd sum qccd sum qccd sum qccd sum qccd sul qcd sul qcd sule ccd sul qcd sul qcd sule ccd sule ccd sule ccd surove surove surove suld。考虑到四倍的重型辐射系统的计算技术，考虑了$ 0^{+} $的四个不同的配置电流，并且在操作员产品扩展（OPE）中包含了最高尺寸$ 6 $的真空冷凝物。最后，以$ 0^{+} $ $ cc \ bar {c} \ bar {c} $ tetraquark状态获得的质量价值与广泛结构的实验数据非常吻合，该数据支持它可以是$ 0^{+} $ Fully-Charmed Tetraquark State。
Motivated by the LHCb's new observation of structures in the $J/ψ$-pair invariant mass spectrum, for which could be classified as possible $cc\bar{c}\bar{c}$ tetraquark candidates, we systematically study $0^{+}$ fully-charmed tetraquark states through QCD sum rules. Making the development of calculation techniques to fourfold heavy hadronic systems, four different configuration currents with $0^{+}$ are considered and vacuum condensates up to dimension $6$ are included in the operator product expansion (OPE). Finally, mass values acquired for $0^{+}$ $cc\bar{c}\bar{c}$ tetraquark states agree well with the experimental data of the broad structure, which supports that it could be a $0^{+}$ fully-charmed tetraquark state.
