Could an axion-like particle be hidden in $η_c\toγγ$?
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915325208952832 |
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| author | Li, Zhi-Jun You, Zheng-Yun Lyu, Xiao-Rui |
| author_facet | Li, Zhi-Jun You, Zheng-Yun Lyu, Xiao-Rui |
| contents | We discuss the possibility of an axion-like particle being merged in the recent observation of $η_c \to γγ$ at BESIII and find that it cannot be excluded in the current experimental data. The mass, width, and coupling strengths of the axion-like particle are extracted, and several other channels to confirm or exclude the existence of such an axion-like particle are also discussed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_04144 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Could an axion-like particle be hidden in $η_c\toγγ$? Li, Zhi-Jun You, Zheng-Yun Lyu, Xiao-Rui High Energy Physics - Phenomenology We discuss the possibility of an axion-like particle being merged in the recent observation of $η_c \to γγ$ at BESIII and find that it cannot be excluded in the current experimental data. The mass, width, and coupling strengths of the axion-like particle are extracted, and several other channels to confirm or exclude the existence of such an axion-like particle are also discussed. |
| title | Could an axion-like particle be hidden in $η_c\toγγ$? |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.04144 |