论文标题
中微子-4实验的结果分析在搜索无菌中微子方面，并与其他实验的结果进行比较
The analysis of the results of the Neutrino-4 experiment on search for sterile neutrino and comparison with results of other experiments
论文作者
论文摘要
我们提出了反应堆抗神经通量和光谱依赖性的新结果，该频谱依赖于SM-3反应堆（俄罗斯Dimitrovgrad）在6-12米的距离范围内的距离。进行了其他测量，并且自上一报告以来，进行统计分析的数据集几乎翻了一番。使用所有收集的数据，我们对振荡参数进行了模型独立分析$Δm^2_ {14} $和$ \ sin^2（2θ_{14}）$。测量结果的连贯求和方法使我们能够直接观察振荡的效果。我们观察到$Δm^2_ {14} =（7.25 \ pm0.13_ {st} \ pm1.08_ {sys}）\ text {ev}^2 $ and $ \ sin^2（2θ_{14} = 0.26 \ pm0.0.0.08_ pm， 0.05_ {sys} $。我们将结果与搜索无菌中微子的其他实验的结果进行了比较。结合了中微子-4的结果以及镀膜异常和反应堆异常的测量结果，我们获得了值$ \ sin^2（2θ_{14}）\大约0.19 \ pm0.04（4.6σ）$。还将中微子-4实验结果与其他反应器实验NEOS，DANS，立体声，前景和加速器实验Miniboone，LSND和ICECUBE实验的结果进行了比较。可以使用中微子-4数据计算的无菌中微子质量，以假设$ m^2_4 \ ofΔm^2_ {14} $是$ m_4 =（2.68 \ pm 0.13）\ text {ev} $。考虑在其他实验中获得的混合角度的估计，我们可以计算电子中微子，中微子和tau中微子的质量：$ m^{\ text {eff}} _ {ν_e} =（0.58 \ pm 0.09）\ pm 0.09） \ pm 0.24）\ text {ev}，m^{\ text {eff}} _ {ν_τ} \ leq 0.65 \ text {ev} $。提供了一个无菌中微子的（3 + 1）模型的扩展PMN矩阵，中微子风味混合方案与无菌中微子和反应堆实验的全局拟合。
We present new results of measurements of reactor antineutrino flux and spectrum dependence on the distance in the range 6-12 meters from the center of the reactor core at SM-3 reactor (Dimitrovgrad, Russia). Additional measurements were carried out and set of data to perform statistical analysis was almost doubled since the previous report. Using all collected data we performed the model independent analysis on the oscillation parameters $Δm^2_{14}$ and $\sin^2(2θ_{14})$. The method of coherent summation of results of measurements allows us to directly observe the effect of oscillations. We observed an oscillation effect in vicinity of $Δm^2_{14} = (7.25\pm0.13_{st}\pm1.08_{sys}) \text{eV}^2$ and $\sin^2(2θ_{14}) =0.26\pm0.08_{st}\pm 0.05_{sys}$. We provide a comparison of our results with results of other experiments on search for sterile neutrino. Combining the result of the Neutrino-4 and the results of measurements of the gallium anomaly and reactor anomaly we obtained value $\sin^2(2θ_{14})\approx 0.19\pm0.04(4.6σ)$. Also was performed comparison of Neutrino-4 experimental results with results of other reactor experiments NEOS, DANSS, STEREO, PROSPECT and accelerator experiments MiniBooNE, LSND and the IceCube experiment also. Sterile neutrino mass which can be calculated using the Neutrino-4 data in assumption that $m^2_4 \approx Δm^2_{14}$ is $m_4 = (2.68 \pm 0.13)\text{eV}$. Considering estimations of mixing angles obtained in other experiments we can calculate masses of electron neutrino, muon neutrino and tau neutrino: $m^{\text{eff}}_{ν_e} = (0.58 \pm 0.09)\text{eV}, m^{\text{eff}}_{ν_μ} = (0.42 \pm 0.24)\text{eV}, m^{\text{eff}}_{ν_τ} \leq 0.65\text{eV}$. Extended PMNS matrix for (3 + 1) model with one sterile neutrino is provided, neutrino flavor mixing scheme with sterile neutrino and global fit of reactor experiments.
