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.

16 pages, revtex, 9 eps figures

References in corpus (4)

• Flavour Matters in Leptogenesis
• Flavoured leptogenesis: a successful thermal leptogenesis with N_1 mass below 10^8 GeV
• Leptogenesis bound on neutrino masses in left-right symmetric models with spontaneous D-parity violation
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Cited by in corpus (2)

• 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