论文标题
重新审视Leptonic非白血病
Revisiting leptonic nonunitarity
论文作者
论文摘要
在高尺度上有额外的中微子状态的情况下，低能有效的$ 3 \ times 3 $ Leptonic混合矩阵（LMM）通常是非洲的。我们回顾一个问题，即我们当前对单个LMM矩阵元素的了解是什么而不假设单位性的。我们首先证明，一组最小的实验约束足以将LMM非军事参数界定到$ {\ cal O}（10^{ - 3}）$的级别，而无需使用中微子振荡数据。然后，我们使用不同的物理学和不同的实验技术来探测相似的参数空间，作为补充交叉检查结果。我们纠正了由于对输入参数的不可思议的治疗而导致的中微子非军事文献中的一些常见误解。我们发现，中微子振荡实验可以限制LMM否，但是与文献中的主张相反，对LMM的总体归一化完全不敏感。因此，我们得出的结论是，包括未来的沙丘实验在内的振荡实验完全不排除非军事。
In the presence of extra neutrino states at high scales, the low-energy effective $3\times 3$ leptonic mixing matrix (LMM) is in general nonunitary. We revisit the question of what is our current knowledge of individual LMM matrix elements without assuming unitarity. We first demonstrate that a minimal set of experimental constraints suffices in bounding LMM nonunitarity parameters to the level of ${\cal O}(10^{-3})$, without the use of neutrino oscillation data. We then revisit oscillation results as a complementary cross-check, using different physics and different experimental techniques to probe a similar parameter space. We correct some common misconceptions in the neutrino nonunitarity literature resulting from an incautious treatment of input parameters. We find that neutrino oscillation experiments can constrain LMM nonclosure, but, contrary to claims in the literature, are completely insensitive to the overall normalization of the LMM. Thus we conclude that oscillation experiments, including the future DUNE experiment, have no power in excluding nonunitarity altogether.
