Cosmology with a heavy Polonyi field

Keisuke Harigaya, Taku Hayakawa, Masahiro Kawasaki, Masaki Yamada

Research output: Contribution to journalArticle

Abstract

We consider a cosmologically consistent scenario with a heavy Polonyi field. The Polonyi field with a mass of (100) TeV decays before the Big-Bang Nucleosynthesis (BBN) and avoids the severe constraint from the BBN. However, the abundance of the Lightest Supersymmetric Particle (LSP) produced from the decay often exceeds the observed dark matter density. In our scenario, the dark matter density is obtained by the LSP abundance with an aid of entropy production, and baryon asymmetry is generated by the Affleck-Dine mechanism. We show that the observed baryon-to-dark matter ratio of (0.1-1) is naturally explained in sequestering models with a QCD axion.

Original languageEnglish
Article number015
JournalJournal of Cosmology and Astroparticle Physics
Volume2016
Issue number6
DOIs
Publication statusPublished - 2016 Jun 8
Externally publishedYes

Keywords

  • baryon asymmetry
  • cosmology of theories beyond the SM
  • supersymmetry and cosmology

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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