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Thermal leptogenesis in extended supersymmetric seesaw

M. Hirsch·M. Malinsky·J. C. Romao·U. Sarkar·J. W. F. Valle
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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.

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M. Hirsch, M. Malinsky, J. C. Romao, U. Sarkar, J. W. F. Valle. 2006-08-01. Thermal leptogenesis in extended supersymmetric seesaw. https://doi.org/10.1103/physrevd.75.011701

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