An alternative SU(4) x SU(2)L x SU(2)R model

Abstract

A simple alternative to the usual Pati-Salam model is proposed. The model allows quarks and leptons to be unified with gauge group $SU(4)\otimes SU(2{)}_L\otimes SU(2{)}_R$ at a remarkably low scale of about 1 TeV. Neutrino masses in the model arise radiatively and are naturally light.

Comments: 9 pages, Latex (1 Figure)