Neutrino Masses in an Extended Gauge Model with E_6 Particle Content
arXiv:hep-ph/9507348 · doi:10.1016/0370-2693(96)00524-2
Abstract
Naturally light singlet neutrinos which mix with the usual doublet neutrinos are possible if the supersymmetric standard gauge model is extended to include a specific additional U(1) factor derivable from E_6 decomposition. The low-energy particle content of the model is limited to the fundamental 27 representations of E_6.
10 pages, latex, no figure