论文标题
超光暗物质引起的中微子振荡的参数共振及其对坎兰和朱诺的影响
Parametric resonance in neutrino oscillations induced by ultra-light dark matter and implications for KamLAND and JUNO
论文作者
论文摘要
如果存在超光的暗物质（ULDM）并伴侣到中微子，则参数共振可能会显着改变中微子振荡概率。如果中微子风味振荡的典型频率$δm^2/（2e）$，则可能会发生这种共振，其中$Δm^2 $是中微子的质量差异，而$ e $是中微子的质量差异，与uldm场的振荡频率相匹配，由质量$ m__ $ __ $ nsup。即使ULDM耦合非常小，这种共振也可能导致可观察到的效果，即使其典型的振荡周期（由$ τ_ϕ =2π/m_ϕ $给出）也比实验时间分辨率短得多。定义一个小参数$ ε_ϕ $是ULDM字段对中微子质量的贡献与中微子质量的真空值之间的比率，如果$ε___________________adim_ventsim4 $，共振的影响尤为重要。与标准振荡相比，这种参数共振可以提高Kamland实验测量值的拟合度约为3.5美元。这种情况将通过Juno实验测试。
If ultra-light dark matter (ULDM) exists and couples to neutrinos, the neutrino oscillation probability might be significantly altered by a parametric resonance. This resonance can occur if the typical frequency of neutrino flavor-oscillations $Δm^2/(2E)$, where $Δm^2$ is the mass-squared difference of the neutrinos and $E$ is the neutrino energy, matches the oscillation frequency of the ULDM field, determined by its mass, $m_ϕ$. The resonance could lead to observable effects even if the ULDM coupling is very small, and even if its typical oscillation period, given by $τ_ϕ=2π/m_ϕ$, is much shorter than the experimental temporal resolution. Defining a small parameter $ε_ϕ$ to be the ratio between the contribution of the ULDM field to the neutrino mass and the vacuum value of the neutrino mass, the impact of the resonance is particularly significant if $ε_ϕm_ϕL\gtrsim 4$, where $L$ is the distance between the neutrino source and the detector. Such parametric resonance can improve the fit to the KamLAND experiment measurements by about $3.5\,σ$ compared to standard oscillations. This scenario will be tested by the JUNO experiment.
