Single and double seesaw for quark-lepton and neutrino masses
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
A left-right model of quarks and leptons based on the gauge group is studied. Here the scalar sector consists of only two doublets namely (1,2,1,1) and (1,1,2,1) but familiar bidoublet (1,2,2,0) is removed. Quarks and charged leptons get mass from a single see-saw mechanism but neutrinos get mass from a double see-saw mechanism. In this type of models the heaviest right handed neutrino can be of order GeVs or less in a natural way, depending on the size of related Yukawa couplings.
Cite
@article{arxiv.hep-ph/0312098,
title = {Single and double seesaw for quark-lepton and neutrino masses},
author = {Biswajoy Brahmachari},
journal= {arXiv preprint arXiv:hep-ph/0312098},
year = {2007}
}
Comments
Latex. Invited talk in ICFP-2003, Seoul, Korea, Oct 6-11, 2003. To appear in proceedings