Cosmology with a heavy Polonyi field

Keisuke Harigaya, Taku Hayakawa, Masahiro Kawasaki, Masaki Yamada

研究成果: Article査読

抄録

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.

本文言語English
論文番号015
ジャーナルJournal of Cosmology and Astroparticle Physics
2016
6
DOI
出版ステータスPublished - 2016 6月 8
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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