Thermal leptogenesis in extended supersymmetric seesaw
arXiv:hep-ph/0608006 · doi:10.1103/PhysRevD.75.011701
Abstract
We consider an extended supersymmetric SO(10) seesaw model with only doublet Higgs scalars, in which neutrino masses are suppressed by the scale of D-parity violation. Leptogenesis can occur at the TeV scale through the decay of a singlet Sigma, thereby avoiding the gravitino crisis. Washout of the asymmetry can be effectively suppressed by the absence of direct couplings of Sigma to leptons.
4 pages, 5 figures
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- Fermion masses, Leptogenesis and Supersymmetric SO(10) Unification
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