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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.08567 |
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| _version_ | 1866917354498162688 |
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| author | Jiang, Jun Qiao, Cong-Feng Zhao, Yu-Han |
| author_facet | Jiang, Jun Qiao, Cong-Feng Zhao, Yu-Han |
| contents | The Atomki anomaly puts forward the hypothesis of an $X(17)$ particle to explain the observation. Utilizing experimental data from the Atomki experiments, measurements of the electron's anomalous magnetic moment, beam dump experiments, the KLOE-2 experiment, the PADME experiment, and the parity-violating Møller scattering experiment, we derive constraints on the couplings of the $X(17)$ boson to electrons. Our findings indicate that no viable parameter spaces exist for the pseudoscalar, scalar, vector, axial-vector, and vector$\pm$axial-vector models describing the couplings of $X(17)$ to electrons. The Atomki anomaly may not correspond to signals of New Physics, but rather to some nuclear effect that remains poorly understood. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_08567 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Where to find $X(17)$? Jiang, Jun Qiao, Cong-Feng Zhao, Yu-Han High Energy Physics - Phenomenology The Atomki anomaly puts forward the hypothesis of an $X(17)$ particle to explain the observation. Utilizing experimental data from the Atomki experiments, measurements of the electron's anomalous magnetic moment, beam dump experiments, the KLOE-2 experiment, the PADME experiment, and the parity-violating Møller scattering experiment, we derive constraints on the couplings of the $X(17)$ boson to electrons. Our findings indicate that no viable parameter spaces exist for the pseudoscalar, scalar, vector, axial-vector, and vector$\pm$axial-vector models describing the couplings of $X(17)$ to electrons. The Atomki anomaly may not correspond to signals of New Physics, but rather to some nuclear effect that remains poorly understood. |
| title | Where to find $X(17)$? |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.08567 |