Discovery of a Glueball-like particle X(2370) at BESIII
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866917959691141120 |
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| author | Huang, Yanping |
| author_facet | Huang, Yanping |
| contents | Radiative decays of the $J/ψ$ particle are of gluon-rich environment, providing an ideal place for hunting glueballs. The $X(2370)$ particle was first discovered in $J/ψ\to γπ^+π^-η^{\prime}$ process in 2011 with the BESIII experiment at BEPCII Collider, and later it was confirmed in $J/ψ\toγK\bar{K}η^{\prime}$ decays. In 2024, with a sample of 10 billion $J/ψ$ events collected at the BESIII detector, the spin-parity of the $X(2370)$ was determined to be $0^{-+}$ for the first time in the partial wave analysis of $J/ψ\to γK^{0}_{S}K^{0}_{S} η^{\prime}$ process. Recently, new decay modes of $X(2370)\to K^{0}_{S}K^{0}_{S}π^0$, $π^0π^0η$ and $a^0π^0$ were observed. The mass, spin-parity quantum numbers, production and decay properties of the $X(2370)$ particle are consistent with the features of the lightest pseudoscalar glueball. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_13286 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Discovery of a Glueball-like particle X(2370) at BESIII Huang, Yanping High Energy Physics - Experiment Radiative decays of the $J/ψ$ particle are of gluon-rich environment, providing an ideal place for hunting glueballs. The $X(2370)$ particle was first discovered in $J/ψ\to γπ^+π^-η^{\prime}$ process in 2011 with the BESIII experiment at BEPCII Collider, and later it was confirmed in $J/ψ\toγK\bar{K}η^{\prime}$ decays. In 2024, with a sample of 10 billion $J/ψ$ events collected at the BESIII detector, the spin-parity of the $X(2370)$ was determined to be $0^{-+}$ for the first time in the partial wave analysis of $J/ψ\to γK^{0}_{S}K^{0}_{S} η^{\prime}$ process. Recently, new decay modes of $X(2370)\to K^{0}_{S}K^{0}_{S}π^0$, $π^0π^0η$ and $a^0π^0$ were observed. The mass, spin-parity quantum numbers, production and decay properties of the $X(2370)$ particle are consistent with the features of the lightest pseudoscalar glueball. |
| title | Discovery of a Glueball-like particle X(2370) at BESIII |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2503.13286 |