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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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Table of 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.