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arXiv 1203.2671hep-ph
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中微子混合矩阵可以(几乎)与元素{ \pm }1成对角线

The neutrino mixing matrix could (almost) be diagonal with entries {\pm}1

Yoni BenTov, A. Zee

摘要:

假设中微子混合矩阵除了是幺正的外,还几乎是厄米的,因而在适当的基中只有diag(+1,-1,-1)的小扰动,这与大亚湾的θ_13 ~ 0.15的测量是一致的。我们提出这种可能性只是作为一个容易证伪的证据,还没有被研究,以及提供一个潜在的有用的手段组织的实验数据。我们探讨了这一分析的现象学意义,并将一种偏离主序关系|V_e3| \approx的类型参数化|V_τ1|.我们还强调了正交矩阵之间的群不变角作为比较数据的一种手段。讨论纯粹是现象学的,没有任何试图从基本理论推导出条件V <\approx V。

英文摘要:

It is consistent with the measurement of θ_13 ~ 0.15 by Daya Bay to suppose that, in addition to being unitary, the neutrino mixing matrix is also almost hermitian, and thereby only a small perturbation from diag(+1,-1,-1) in a suitable basis. We suggest this possibility simply as an easily falsifiable ansatz that has not already been studied, as well as to offer a potentially useful means of organizing the experimental data. We explore the phenomenological implications of this ansatz and parametrize one type of deviation from the leading order relation |V_e3| \approx |V_τ1|. We also emphasize the group-invariant angle between orthogonal matrices as a means of comparing to data. The discussion is purely phenomenological, without any attempt to derive the condition V† \approx V from a fundamental theory.

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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