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arXiv · 1801.04729

A radiative neutrino mass model in light of DAMPE excess with hidden gauged $U(1)$ symmetry

Takaaki Nomura·Hiroshi Okada·Peiwen Wu
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Abstract

We propose a one-loop induced neutrino mass model with hidden $U(1)$ gauge symmetry, in which we successfully involve a bosonic dark matter (DM) candidate propagating inside a loop diagram in neutrino mass generation to explain the $e^+e^-$ excess recently reported by the DArk Matter Particle Explorer (DAMPE) experiment. In our scenario dark matter annihilates into four leptons through $Z'$ boson as DM DM $\to Z' Z' (Z' \to \ell^+ \ell^-)$ and $Z'$ decays into leptons via one-loop effect. We then investigate branching ratios of $Z'$ taking into account lepton flavor violations and neutrino oscillation data.

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Takaaki Nomura, Hiroshi Okada, Peiwen Wu. 2018-02-07. A radiative neutrino mass model in light of DAMPE excess with hidden gauged $U(1)$ symmetry. https://doi.org/10.1088/1475-7516%2F2018%2F05%2F053

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