Baryogenesis and Late-Decaying Moduli

Understand

Late-decaying string moduli dilute the baryon asymmetry of the universe created in any previous era.

• The reheat temperature for such moduli is below a GeV, thus motivating baryogenesis at very low temperatures.
• We present an extension of the minimal supersymmetric standard model with TeV-scale colored fields that can yield the correct baryon asymmetry of the universe in this context.
• Modulus decay, which reheats the universe at a temperature below GeV, produces the visible sector fields and neutralino dark matter in non-thermal fashion.