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arXiv 1608.01307hep-phhep-ex
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用中微子振荡研究轻标量暗物质

Neutrino Oscillations as a Probe of Light Scalar Dark Matter

Asher Berlin

摘要:

我们考虑一类涉及超轻标量暗物质与标准模型中微子相互作用的模型。这种耦合改变了中微子的质量分裂和混合角,使其包含了额外的成分,这些成分随时间周期性地变化,其频率和振幅由暗物质的质量和能量密度决定。最近对太阳中微子通量中异常周期性的研究结果强烈地限制了暗物质-中微子耦合的数量级,低于当前和从宇宙微波背景观测中得出的预测极限。

英文摘要:

We consider a class of models involving interactions between ultra-light scalar dark matter and Standard Model neutrinos. Such couplings modify the neutrino mass splittings and mixing angles to include additional components that vary in time periodically with a frequency and amplitude set by the mass and energy density of the dark matter. Null results from recent searches for anomalous periodicities in the solar neutrino flux strongly constrain the dark matter-neutrino coupling to be orders of magnitude below current and projected limits derived from observations of the cosmic microwave background.

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