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

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 $Z^{\prime }$ boson as DM DM $\to Z^{\prime }{Z}^{\prime }(Z^{\prime }\to {\ell }^{+}{\ell }^{-})$ and $Z^{\prime }$ decays into leptons via one-loop effect. We then investigate branching ratios of $Z^{\prime }$ taking into account lepton flavor violations and neutrino oscillation data.

Comments: 14 pages, 5 figures, 1 table