eV Seesaw with Four Generations
High Energy Physics - Phenomenology
2011-02-21 v2
Abstract
We extend the eV seesaw scenario to four lepton generations. The LSND anomaly is taken as the right-handed seesaw scale, i.e. m_R ~ 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 indicates that the third mixing angle sin^2(theta13) is likely less than 0.01.
Cite
@article{arxiv.hep-ph/0512278,
title = {eV Seesaw with Four Generations},
author = {Wei-Shu Hou and Andrea Soddu},
journal= {arXiv preprint arXiv:hep-ph/0512278},
year = {2011}
}
Comments
Some minor corrections, 3 updated figures. Results and conclusions are mildly changed. To appear in Phys. Lett. B