分类: 物理学 >> 核物理学 提交时间: 2016-09-05
摘要: In light of the observation of a relatively large θ13, one has to consider breaking the μ-τ symmetry properly which would otherwise result in a vanishing θ13 (as well as θ23=π/4). Therefore, we investigate various symmetry-breaking patterns and accordingly identify those that are phenomenologically viable. Furthermore, the symmetry-breaking effects arising from some specific physics (e.g., the renormalization group equation running effect) are discussed as well.