Self-Interacting Dark Matter and flavor anomalies in an atlas of leptophilic models

2024/08/28 by Nicolás Aravena Gómez, Gómez, Nicolás, A. Castillo +1
Physics and Astronomy · Medicine · #Dark Matter and Cosmic Phenomena #Biofield Effects and Biophysics

paper · pdf · doi:10.48550/arxiv.2408.15536

Abstract

We consider an atlas of leptophilic models with non-universal charges that combine the quantum numbers \((L_e - L_μ)\) and \((L_μ - L_τ)\) in various realizations. We explore diverse manifestations of the atlas to understand their impact on explaining the muon \((g-2)_μ\) anomaly, as well as the origin of self-interacting dark matter, which serves as a feasible explanation for the small-scale challenges of cold dark matter. We found that a single vector gauge boson with mass range of ∼ 10~MeV and non-universal couplings as indicated successfully mediates interactions in the fermion and dark matter sectors in such a way that (g-2)_μ additional contribution agrees with experimental constraints and the self-interacting dark matter fluid behaves as suggested by observations at different astrophysical length scales. Furthermore, the model requires a dark matter candidate within 10-100~ GeV order mass and a strong dark coupling (g_χ ∼ 0.3, much stronger than the lepton's couplings g'_l \lesssim 10^-4) to be a successful scenario to unravel astrophysical small scale problems.

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