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Published September 2009 | public
Journal Article

On the origin of neutrino masses

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 SU(3)⊗SU(2)⊗U(1) quantum numbers, (8,2,1/2), and a fermionic color octet in the fundamental or adjoint representation of SU(2), one can generate neutrino masses in agreement with experiment. Signals at the LHC and constraints from flavor violation are briefly discussed.

Additional Information

© 2009 The American Physical Society. Received 24 June 2009; published 9 September 2009. One of the authors (P. F. P.) would like to thank Caltech for hospitality. The work of P. F. P. was supported in part by the U.S. Department of Energy Contract No. DE-FG02- 08ER41531 and in part by the Wisconsin Alumni Research Foundation. The work of M. B.W. was supported in part by the U.S. Department of Energy Contract No. DE-FG02- 92ER40171.

Additional details

Created:
August 18, 2023
Modified:
October 19, 2023