AUTHOR=Delle Rose Luigi, Khalil Shaaban, King Simon J. D., Moretti Stefano
TITLE=New Physics Suggested by Atomki Anomaly
JOURNAL=Frontiers in Physics
VOLUME=7
YEAR=2019
URL=https://www.frontiersin.org/articles/10.3389/fphy.2019.00073
DOI=10.3389/fphy.2019.00073
ISSN=2296-424X
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.