Towards heavy double-gluon hybrid mesons with exotic quantum numbers in QCD sum rules
| Autor: | Lian, Ding-Kun, Wang, Qi-Nan, Chen, Xu-Liang, Yang, Peng-Fei, Chen, Wei, Chen, Hua-Xing |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The double-gluon hybrid meson configuration was recently proposed and investigated within QCD sum rules. In this talk, we discuss the color structures of the double-gluon hybrid meson and construct current operators with exotic quantum numbers $J^{PC}=1^{-+}$ and $2^{+-}$ for two of the structures. In the framework of QCD sum rules, we consider the condensates up to dimension-8 at the leading order of $\alpha_{s}$ for both charmonium and the bottomonium systems. The results indicate that the masses of the $1^{-+}$ and $2^{+-}$ charmonium double-gluon hybrid mesons are approximately $6.1-7.2$ GeV and $6.3-6.4$ GeV, respectively. As for the bottomonium systems, their masses fall within the range of $13.7-14.3$ GeV and $12.6-13.3$ GeV for the $1^{-+}$ and $2^{+-}$ channels, respectively. Additionally, the charmonium hybrids could be produced in the radiative decays of bottomonium mesons in BelleII experiment. Comment: 9 pages, 5 figures, 4 tables. Proceedings article for QCD24: 27th Hih-Energy Physics International Conference in Quantum Chromodynamis |
| Databáze: | arXiv |
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