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In this work we use previous results on the masses and mixing of neu- trinosof an S3 model with three right-handed Majorana neutrinos and three Higgsdoublets, to reduce one parameter in the case when two of the right-handedneutrinos are mass degenerate. We derive a new param- eterization for the VP MN S mixing matrix, with a new set of parameters, in the more general case wherethe right-handed neutrino masses are dif- ferent. With these results, wecalculate leptogenesis and the associated baryogenesis in the model in the twodifferent scenarios. We show that it is possible to have enough leptogenesis toexplain the baryonic asymmetry with right-handed neutrino masses above 10^{6}GeV.

Neutrino masses, mixing, and leptogenesis in an S3 model