Low-Energy Thermal Leptogenesis in an Extended NMSSM Model

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.

arXiv comment16 pages, revtex, 9 eps figures

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Cited by in corpus (4)

• Type-II Seesaw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter
• Thermal leptogenesis in a TeV scale model for neutrino masses
• Neutrino mass and low-scale leptogenesis in a testable SUSY SO(10) model
• Thermal leptogenesis, dark matter, and gravitational waves from an extended canonical seesaw scenario