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arXiv 1012.1595hep-phhep-ex
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2010年前后中微子质量的模型和现象学

Models and Phenomenology of Neutrino Masses circa 2010

Mu-Chun Chen, K. T. Mahanthappa

摘要:

我们回顾了中微子质量和混合模型的最新进展。重点讨论了基于有限群族对称性的三双峰中微子混合模型。特别是,我们描述了一个最近的模型的基础上超对称SU(5)结合家庭对称的基础上的双四面体群,T '。所有22个可观测的费米子质量和混合角和CP破坏措施,只有9个参数。在这个模型中,一个近三双极大MNS矩阵和一个现实的CKM矩阵同时产生的MNS矩阵得到稍微修改凭借具有Georgi-Jarlskog关系。由于T '中存在复Clebsch-Gordan系数,该模型中的CP破坏完全是几何起源。轻子狄拉克CP相位模型的预测值是227度,这非常接近目前SuperK的最佳拟合值220度。

英文摘要:

We review recent developments in models of neutrino masses and mixing. Emphases are given to models based on finite group family symmetries from which the tri-bimaximal neutrino mixing can arise. In particular, we describe one recent model based on SUSY SU(5) combined with a family symmetry based on the double tetrahedral group, T'. All 22 observable fermion masses and mixing angles and CP violating measures are fitted with only 9 parameters. In this model, a near tri-bimaximal MNS matrix and a realistic CKM matrix are simultaneously generated; the MNS matrix gets slightly modified by virtue of having the Georgi-Jarlskog relations. Due to the presence of complex Clebsch-Gordan coefficients in T', CP violation in this model is entirely geometrical in origin. The prediction of the model for the leptonic Dirac CP phase is 227 degrees, which turns out to be very close to the current best fit value of 220 degrees from SuperK.

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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