Non-zero θ_13 in models for hierarchical neutrino mass spectrum

Details Non-zero θ_13 in models for hierarchical neutrino mass spectrum Non-zero θ_13 in models for hierarchical neutrino mass spectrum

2011-04-09

arxiv.org/abs/1104.1689v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

v1:13 pages; v2:typos corrected, references added, accepted for publication in Phys. Lett. B

Scientific paper

We introduce three right-handed Majorana neutrinos and combine the type-I seesaw and inert doublet mechanisms. The resultant (active) neutrino mass matrix is divided into rank=1 and =2 parts with different energy scales. The different energy scales are reduce to different mass scales in the hierarchical neutrino mass spectrum. We apply this scheme to both the inverted and normal hierarchy cases and find a correlation between the smallest mixing angle (\theta_13) and the lightest neutrino mass.

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