Discrete Gauge Symmetries in Axionic Extensions of the SSM
E. J. Chun, A. Lukas
Abstract
We examine discrete gauge symmetries in axionic extensions of the SSM which provide a solution of the μ-problem. Automatic-PQ symmetry and proton stability are shown to be guaranteed by certain discrete symmetries. Focusing on the L-violating discrete symmetries we discuss two sources of neutrino masses and their relevance for the solar neutrino problem.
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