Majorana Neutrinos from Inverse Seesaw in Warped Extra Dimension

Understand

We propose the inverse seesaw mechanism as a way to understand small Majorana masses for neutrinos in warped extra dimension models with seesaw scale in the TeV range.

• The ultra-small lepton number violation needed in implementing inverse seesaw mechanism in 4D models is explained in this model as a consequence of lepton number breaking occurring on the Planck brane.
• We construct realistic models based on this idea that fit observed neutrino oscillation data for both normal and inverted mass patterns.
• We compute the corrections to light neutrino masses from the Kaluza-Klein modes and show that they are small in the parameter range of interest.