Neutrinophilic dark-matter annihilation in a model with U(1)Lμ−Lτ×U(1)H gauge symmetry        

Keiko I. Nagao, Takaaki Nomura, Hiroshi Okada, Takashi Shimomura

We propose a model with two different extra U(1) gauge symmetries; muon minus tauon symmetry U(1)Lμ−Lτ and hidden symmetry U(1)H. Then, we explain muon anomalous magnetic moment, semi-leptonic decays b→sℓℓ¯, and dark matter. In particular, we find an intriguing dark matter candidate to be verified by Hyper-Kamiokande and JUNO in the future that request neutrinophilic DM with rather light dark matter mass∼(10) MeV.

Phys. Rev. D

108

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