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Can leptophilic-ALP be a solution to the muon (g-2) anomaly?

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arxiv 2204.07920 v2 pith:ZLKRHK46 submitted 2022-04-17 hep-ph

Can leptophilic-ALP be a solution to the muon (g-2) anomaly?

classification hep-ph
keywords muonanomalyexperimentallesssimalleviateaxion-likechargedconsider
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In the light of recent measurement of muon $(g-2)$, we investigate the phenomenological implications of an axion-like particle (ALP) which only couples to the standard model charged leptons. We find that in a narrow mass range of ALP, it can alleviate the tension between the theoretical prediction and experimental observation of $(g-2)_\mu$ once we consider all possible one and two-loop diagrams. In particular, ALP can either explain the muon $(g-2)$ anomaly for $5\,{\rm GeV} \lesssim m_a \lesssim 6 \,{\rm GeV}$ while satisfying the other experimental constraints, or be restricted by it.

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