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arXiv 1801.04729hep-phastro-ph.HE
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具有隐藏规范$U(1)$对称性的DAMPE过剩辐射中微子质量模型

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

Takaaki Nomura, Hiroshi Okada, Peiwen Wu

摘要:

提出了一个具有$U(1)$规范对称性的单圈诱导中微子质量模型,成功地将玻色子暗物质(DM)候选者引入中微子质量生成的圈图中,解释了最近由DAMPE实验报道的$e^+e^-$过剩现象.在我们的方案中,暗物质通过$Z'$玻色子湮灭为四个轻子,作为DM DM $\to Z' Z' (Z' \to \ell^+ \ell^-)$和$Z'$通过单圈效应衰变为轻子。然后,我们调查的分支比的$Z'$考虑轻子味违反和中微子振荡的数据。

英文摘要:

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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