论文标题
通过微酮检测器，从外观和消失搜索中进行的轻型无菌中微子振荡的首次限制
First constraints on light sterile neutrino oscillations from combined appearance and disappearance searches with the MicroBooNE detector
论文作者
论文摘要
我们提出了微酮液体氩检测器中的EV规模无菌中微子振荡的搜索，同时考虑了$ 3+1 $ Active-to-Sterile-Sterile中微子振荡框架内的所有可能的外观和消失效应。我们使用与Fermilab Booster Netrino中心束的目标相对应的数据，分析了Microboone检测器中的中微子候选事件，用于在微酮检测器中对带电电流的$ν_e$和$ν_μ$交互作用的测量结果，该数据使用了与Fermilab Booster NeTrino的目标的6.37 $ \ times $ 10 $^{20} $ proton的数据相对应。 We observe no evidence of light sterile neutrino oscillations and derive exclusion contours at the $95\%$ confidence level in the plane of the mass-squared splitting $Δm^2_{41}$ and the sterile neutrino mixing angles $θ_{μe}$ and $θ_{ee}$, excluding part of the parameter space allowed by experimental anomalies. $ν_e$外观的取消和$ν_e$消失效应，由于分析的整体处理$ 3+1 $，在确定振荡参数时会导致退化，本文将在本文中进行讨论，并将通过未来的分析来解决。
We present a search for eV-scale sterile neutrino oscillations in the MicroBooNE liquid argon detector, simultaneously considering all possible appearance and disappearance effects within the $3+1$ active-to-sterile neutrino oscillation framework. We analyze the neutrino candidate events for the recent measurements of charged-current $ν_e$ and $ν_μ$ interactions in the MicroBooNE detector, using data corresponding to an exposure of 6.37$\times$10$^{20}$ protons on target from the Fermilab booster neutrino beam. We observe no evidence of light sterile neutrino oscillations and derive exclusion contours at the $95\%$ confidence level in the plane of the mass-squared splitting $Δm^2_{41}$ and the sterile neutrino mixing angles $θ_{μe}$ and $θ_{ee}$, excluding part of the parameter space allowed by experimental anomalies. Cancellation of $ν_e$ appearance and $ν_e$ disappearance effects due to the full $3+1$ treatment of the analysis leads to a degeneracy when determining the oscillation parameters, which is discussed in this paper and will be addressed by future analyses.
