Proton Life-Time Problem In Finite Grand Unified Theories
N. Deshpande, Xiao-Gang He, E. Keith
Abstract
We study proton decay in finite supersymmetric SU(5) grand unified theories. We find that the dimension-five operators due to color triplet higgsino induce too rapid a proton decay. This behaviour can be traced to the large Yukawa couplings to the first generation that are necessary for finiteness.
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