eV seesaw with four generations
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
73
Journal Issue
11
Pages
229-233
Date Issued
2006
Author(s)
Andrea Soddu
Abstract
We extend the eV seesaw scenario to four lepton generations. The LSND anomaly is taken as the right-handed seesaw scale, i.e., mR ∼ eV. The fourth generation then gives a heavy pseudo-Dirac neutrino which largely decouples from other generations, and is relatively stable. One effectively has a 3 + 3 solution to the LSND anomaly, where we illustrate with numerical solutions. Our study seems to indicate that the third mixing angle sin2 θ13 may be less than 0.01. © 2006 Elsevier B.V. All rights reserved.
Type
journal article