New oscillation and scattering constraints on the tau row matrix elements without assuming unitarity
New oscillation and scattering constraints on the tau row matrix elements without assuming unitarity
复制标题
DOI：
10.1007/jhep06(2022)135
复制
发表时间：
2021-09
影响因子：
5.4
通讯作者：
P. Denton;J. Gehrlein
中科院分区：
文献类型：
--
作者：
P. Denton;J. Gehrlein
中微子是标准模型中测量得最少的粒子。最值得注意的是，当不假设一致性时，轻子混合矩阵的tau中微子行受到的约束很差。在本文中，我们确定了涉及tau中微子的数据集，这些数据集提高了我们对混合矩阵中tau中微子部分的理解，特别是ν τ在大气中微子中的出现。我们提出了关于tau行元素的新结果，利用对电子和介子行存在的约束，在有或没有运动可达无菌性的情况下违反了一致性。我们还展示了由于即将进行的实验而预期的灵敏度，并证明在仔细组合拟合中，tau中微子行精度可能与μ子中微子行相当。
The tau neutrino is the least well measured particle in the Standard Model. Most notably, the tau neutrino row of the lepton mixing matrix is quite poorly constrained when unitarity is not assumed. In this paper, we identify data sets involving tau neutrinos that improve our understanding of the tau neutrino part of the mixing matrix, in particular ν τ appearance in atmospheric neutrinos. We present new results on the elements of the tau row leveraging existing constraints on the electron and muon rows for the cases of unitarity violation, with and without kinematically accessible steriles. We also show the expected sensitivity due to upcoming experiments and demonstrate that the tau neutrino row precision may be comparable to the muon neutrino row in a careful combined fit.