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arXiv 2109.14575hep-phastro-ph.HEhep-ex
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不假设幺正性的τ行矩阵元的新振荡和散射约束

New oscillation and scattering constraints on the tau row matrix elements without assuming unitarity

Peter B. Denton, Julia Gehrlein

摘要:

τ中微子是标准模型中测量得最差的粒子。最值得注意的是,当不假设幺正性时,轻子混合矩阵的τ中微子行的约束很差。在本文中,我们识别了涉及τ中微子的数据集,这些数据集可以提高我们对混合矩阵中τ中微子部分的理解,特别是大气中微子中的$ν_τ$出现。我们提出了新的结果的元素的tau行利用现有的限制电子和μ子行的情况下的幺正违反,有和没有运动学上可访问的无菌。我们还显示了预期的灵敏度,由于即将到来的实验,并表明,τ中微子行精度可能是一个仔细的组合适合的μ子中微子行。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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