Baryogenesis and late-decaying moduli Academic Article uri icon

abstract

  • 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 nonthermal fashion. We discuss various possibilities for baryogenesis from TeV-scale colored fields and show that they can generate an acceptable baryon asymmetry, while being compatible with phenomenological constraints like neutron-antineutron oscillation. 2010 The American Physical Society.

published proceedings

  • PHYSICAL REVIEW D

author list (cited authors)

  • Allahverdi, R., Dutta, B., & Sinha, K.

citation count

  • 39

complete list of authors

  • Allahverdi, Rouzbeh||Dutta, Bhaskar||Sinha, Kuver

publication date

  • August 2010