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arXiv · hep-ph/0611257

Low-Energy Thermal Leptogenesis in an Extended NMSSM Model

Ernest Ma·Narendra Sahu·Utpal Sarkar
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Abstract

Thermal leptogenesis in the canonical seesaw model in supersymmetry suffers from the incompatibility of a generic lower bound on the mass scale of the lightest right-handed neutrino and the upper bound on the reheating temperature of the Universe after inflation. This is resolved by adding an extra singlet superfield, with a discrete $Z_2$ symmetry, to the NMSSM (Next to Minimal Supersymmetric Standard Model). This generic mechanism is applicable to any supersymmetric model for lowering the scale of leptogenesis.

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Ernest Ma, Narendra Sahu, Utpal Sarkar. 2006-11-20. Low-Energy Thermal Leptogenesis in an Extended NMSSM Model. https://doi.org/10.1088/0954-3899%2F34%2F4%2F010

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