arXiv:1012.2970·v2·High Energy Physics — Phenomenology
Finite quantum corrections to the tribimaximal neutrino mixing
Takeshi Araki🇨🇳 · Chao-Qiang Geng🇹🇼 · Zhi-zhong Xing🇨🇳
Abstract
We calculate finite quantum corrections to the tribimaximal neutrino mixing pattern V_TB in three generic classes of neutrino mass models. We show that three flavor mixing angles can all depart from their tree-level results described by V_TB, among which \theta_12 is most sensitive to such quantum effects, and the Dirac CP-violating phase can radiatively arise from two Majorana CP-violating phases. This theoretical scheme offers a new way to understand why \theta_13 is naturally small and how three CP-violating phases are presumably correlated.
Comments: v1: 9 pages; v2: added Appendix and discussion about RGEs, deleted one figure and updated the other figures, accepted for publication in Phys. Lett. B