Minimal Neutrino Texture with Neutrino Mass Ratio and Cabibbo Angle

Understand

We present neutrino mass matrix textures in a minimal framework of the type-I seesaw mechanism where two right-handed Majorana neutrinos are introduced in order to reproduce experimental results of neutrino oscillations.

• The textures can lead to experimentally favored leptonic mixing angles described by the tri-bimaximal mixing with one additional rotation.
• We present minimal and next to minimal textures for the normal mass hierarchy case in a context of the texture zero.
• A minimal texture in the inverted hierarchy case is also constructed, which does not have any vanishing entries in a Dirac neutrino mass matrix.