论文标题
使用T2K数据的CP-Violation搜索
CP-violation search with T2K data
论文作者
论文摘要
T2K实验是一个长基线中微子振荡实验，它使用$ν_μ$和$ \ \barν_μ$ beams在3-Flavor PMNS Neutrino混合模型中限制CP-violation效应。通过$ν_μ\toν_{e} $和$ \barν_μ\ to \barν_{e} $外观通道，T2K对中微子混合中的CP竞争效果很敏感。与CP保存案例相比，观察到$ν$ beam模式下的$ν_{e} $候选物。 T2K找到了$δ_ {\ mathrm {cp}} = - 1.97 _ { - 0.70}^{+0.97} $的最佳拟合价值，使用Feldman-Cousins校正的间隔，并排除CP强度的值$δ_{\ Mathrm {\ Mathrm {cp and $ cl and $ cl and $ cl $ cl 0 $ cl 0 $ uct $ 0 $ 0 $ 0 $ uct。 $ j _ {\ mathrm {cp}} = 0 $在2 $σ$中也排除在$δ_ {\ mathrm {cp}} $中时，有利于负值。
The T2K experiment is a long-baseline neutrino oscillation experiment which uses $ν_μ$ and $\barν_μ$ beams to constrain CP-violating effects in a 3-flavor PMNS neutrino mixing model. Through $ν_μ\toν_{e}$ and $\barν_μ\to\barν_{e}$ appearance channels, T2K is sensitive to CP-violating effects in neutrino mixing. An excess of $ν_{e}$ candidates in the $ν$-beam mode is observed when compared to the CP conserving cases. T2K finds a best fit value of $δ_{\mathrm{CP}}=-1.97_{-0.70}^{+0.97}$ using Feldman-Cousins corrected intervals and excludes CP-conserving values of $δ_{\mathrm{CP}}$ of $0$ and $π$ at the 90% CL. $J_{\mathrm{CP}}=0$ is also excluded at 2$σ$ when using a flat prior in $δ_{\mathrm{CP}}$, favoring negative values.
