Abstract
We discuss the simplest mechanisms for generating neutrino masses at tree level and one loop level. We find a significant number of new possibilities where one can generate neutrino masses at the one-loop level by adding only two new types of representations. These models have renormalizable interactions that automatically conserve baryon number. Adding to the minimal standard model a scalar color octet with quantum numbers, , and a fermionic color octet in the fundamental or adjoint representation of , one can generate neutrino masses in agreement with experiment. Signals at the LHC and constraints from flavor violation are briefly discussed.
- Received 24 June 2009
DOI:https://doi.org/10.1103/PhysRevD.80.053006
©2009 American Physical Society