Probing the Dark Axion Portal with Muon Anomalous Magnetic Moment

Abstract

We propose a new scenario of using the dark axion portal at one-loop level to explain the recently observed muon anomalous magnetic moment by the Fermilab Muon g-2 experiment. Both axion/axion-like particle (ALP) and dark photon are involved in the same vertex with photon. Although ALP or dark photon alone cannot explain muon $g-2$, since the former provides only negative contribution while the latter has very much constrained parameter space, dark axion portal can save the situation and significantly extend the allowed parameter space. The observed muon anomalous magnetic moment provides a robust probe of the dark axion portal scenario.

arXiv comment8 pages, 6 figures, match the EPJC version

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• Muon anomalous magnetic dipole moment in the $\mu \nu$SSM
• Shedding light on dark matter with recent muon $(g-2)$ and Higgs exotic decay measurements
• Muon $(g-2)$ and Flavor Puzzles in the $U(1{)}_X^{}$-gauged Leptoquark Model
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