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New Physics Suggested by Atomki Anomaly

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 15 May 2019Embargo end date: 01 Jan 2018 Italy Publisher:Frontiers Media SAJournal:Frontiers in Physics, volume 7 (eissn: 2296-424X, Copyright policy )Funded by:EC | RIFP, EC | ELUSIVES, EC | InvisiblesPlus +2 projects
Authors: Luigi Delle Rose; Luigi Delle Rose; Shaaban Khalil; Simon J. D. King; Simon J. D. King; Stefano Moretti; Stefano Moretti;

doi: 10.3389/fphy.2019.00073 , 10.48550/arxiv.1812.05497

arXiv: 1812.05497

handle: 20.500.11770/332753

New Physics Suggested by Atomki Anomaly

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.

26 pages, 4 figures

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Italy
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Keywords

2HDM, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Z', Z′, Physics, QC1-999, FOS: Physical sciences, Atomki anomaly, U(1), low scale, Low scale

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 29
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    		 Top 10%
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
29
Top 10%
Top 10%
Top 10%
Green
gold