振荡中微子与振荡标量：约束标量暗物质诱导的中微子质量
Oscillating Neutrinos vs. Oscillating Scalars: Constraining Scalar Dark Matter-Induced Neutrino Mass
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中文总结 AI 辅助
该研究探讨标量暗物质诱导中微子质量的假说，利用T2K、RENO和JUNO实验数据约束了标量与中微子耦合产生的质量占比，未来JUNO数据可进一步改善相关限制。
中文摘要 AI 辅助
我们考虑中微子质量由与超轻（赝）标量场耦合产生的假说，该标量场构成宇宙中的暗物质。这会产生随时间变化的中微子质量，其频率由暗物质质量决定，对中微子振荡数据有影响。我们利用银河系中暗物质处于维里化状态这一事实，详细讨论了相关的时间尺度。使用T2K、RENO和JUNO实验的数据，我们表明，对于暗物质质量小于约$3\ imes 10^{-8}$eV，直至最小允许暗物质质量约$10^{-21}$eV，取决于标量质量的取值，与背景标量耦合产生的中微子质量最多占总中微子质量的9%至54%。JUNO未来的数据可能在某些标量质量区域将这些限制改善至1%。我们聚焦于实标量场，但我们的大部分结果也适用于复标量场。
英文摘要
We consider the hypothesis that neutrino masses are generated by a coupling to an ultra-light (pseudo-)scalar field, which provides the dark matter in the universe. This leads to time-varying neutrino masses with a frequency set by the dark matter mass, with implications for neutrino oscillation data. We use that dark matter is in a virialised state in the galaxy and provide a detailed discussion of the relevant time scales. Using data from the T2K, RENO and JUNO experiments, we show that for dark matter masses smaller than about $3\times 10^{-8}$eV down to the smallest allowed dark matter mass of about $10^{-21}$eV only a fraction of between 9\% to 54\% of the total neutrino mass can arise from the coupling to the background scalar, depending on the value of the scalar mass. Future data from JUNO may improve these limits down to 1\% in certain regions of scalar masses. We focus on a real scalar field, but most of our results hold also for a complex scalar.
