A Shift from Democratic to Tri-bimaximal Neutrino Mixing with Relatively Large theta_{13}

Abstract

Recent neutrino oscillation data hint that the smallest neutrino mixing angle theta_{13} is possible to lie in the range 5^\circ \lesssim θ_{13} \lesssim 12^\circ. We show that reasonable perturbations to the democratic mixing pattern, which is geometrically related to the tri-bimaximal mixing pattern through an equal shift θ_* \simeq 9.7^\circ of two large mixing angles, can naturally produce a nearly tri-bimaximal neutrino mixing matrix V with sufficiently large theta_{13}. Two especially simple but viable scenarios of V are proposed and their phenomenological consequences are discussed.

11 pages, 1 figure. Slight modifications. References added. Accepted for publication in PLB

References in corpus (7)

• Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
• TriMinimal Parametrization of the Neutrino Mixing Matrix
• Large U_{e3} and Tri-bimaximal Mixing
• Theoretical Overview of Neutrino Properties
• Threshold effects on renormalization group running of neutrino parameters in the low-scale seesaw model
• Intrinsic Deviation from the Tri-bimaximal Neutrino Mixing in a Class of A_4 Flavor Models
• Finite quantum corrections to the tribimaximal neutrino mixing

Cited by in corpus (7)

• Perturbations to μ-τ symmetry in neutrino mixing
• Perturbations to $\mu -\tau$ Symmetry, Leptogenesis and Lepton Flavour Violation with Type II Seesaw
• On self-complementarity relations of neutrino mixing
• Non-zero ${\theta }_{13}$ with Unbroken $\mu -\tau$ Symmetry of the Active Neutrino Mass Matrix in the Presence of a Light Sterile Neutrino
• Theoretical Overview on the Flavor Issues of Massive Neutrinos
• A Nearest-neighbor Expansion of Lepton Flavor Mixing in Powers of the $\mu$-$\tau$ Permutation Symmetry Breaking Effect
• Generating CP violation from a modified Fridberg-Lee model