The ATOMKI anomaly in the framework of extended two-Higgs-doublet models

Date

2024-9

Author

Sarı, Zozan

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In 2016, the ATOMKI collaboration observed an anomaly in the decay of the excited beryllium atoms. This anomaly indicates the possible existence of a 17 MeV particle. Even though there has been no independent verification of the results yet, it is still worthwhile to discuss possible scenarios explaining the Atomki anomaly, which might put further constraints on the so-called hidden/dark sector physics. In this thesis, an extended two-Higgs-doublet model will be examined, incorporating existing constraints from various other experiments to address this anomaly.

Subject Keywords

2HDM, ATOMKI, Beryllium anomaly, X17, BSM

URI

https://hdl.handle.net/11511/111314

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Graduate School of Natural and Applied Sciences, Thesis