New Physics Suggested by Atomki Anomaly

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...

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Bibliographic Details
Published in:Frontiers in physics 2019-05, Vol.7
Main Authors: Delle Rose, Luigi, Khalil, Shaaban, King, Simon J. D., Moretti, Stefano
Format: Article
Language:English
Subjects:
2HDM
Atomki anomaly
low scale
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Summary: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.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2019.00073