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arXiv · 1812.05497

New Physics Suggested by Atomki Anomaly

Luigi Delle Rose·Shaaban Khalil·Simon J. D. King·Stefano Moretti
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Abstract

We consider several extensions of the Standard Model (SM) which can explain the anomalies observed by the Atomki collaboration in the decay of excited states of Beryllium via a new boson with a mass around 17 MeV yielding $e^+e^-$ pairs. We show how both spin-0 and 1 solutions are possible and describe the Beyond the SM (BSM) scenarios that can accommodate these. They include BSM frameworks with either an enlarged Higgs, or gauge sector, or both.

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Luigi Delle Rose, Shaaban Khalil, Simon J. D. King, Stefano Moretti. 2019-05-20. New Physics Suggested by Atomki Anomaly. https://doi.org/10.3389/fphy.2019.00073

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