Journal
FRONTIERS IN PHYSICS
Volume 7, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2019.00073
Keywords
Atomki anomaly; 2HDM; U(1); Z '; low scale
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Funding
- NExT Institute
- STFC [ST/L000296/1]
- STFC/COFUND Rutherford International Fellowship Programme (RIFP)
- H2020-MSCA grant agreement InvisiblesPlus (RISE) [690575]
- STDF [13858]
- H2020-MSCA grant agreement NonMinimalHiggs (RISE) [645722]
- H2020-MSCA grant agreement Elusives (ITN) [674896]
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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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