TY - JOUR
T1 - Cosmology with a heavy Polonyi field
AU - Harigaya, Keisuke
AU - Hayakawa, Taku
AU - Kawasaki, Masahiro
AU - Yamada, Masaki
N1 - Funding Information:
This work is supported by Grant-in-Aid for Scientific research from the Ministry of Education, Science, Sports, and Culture (MEXT), Japan, No. 15H05889 (M.K.) and No. 25400248 (M.K.), JSPS Research Fellowships for Young Scientists (No. 25.8715 (M.Y.)), World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan (M.K. and M.Y.), the Program for the Leading Graduate Schools, MEXT, Japan (T.H. and M.Y.), the Director, Office of Science, Office of High Energy and Nuclear Physics, of the U.S. Department of Energy under Contract DE-AC02-05CH11231 (K.H.), by the National Science Foundation under grants PHY-1316783 and PHY-1521446 (K.H.).
PY - 2016/6/8
Y1 - 2016/6/8
N2 - 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.
AB - 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.
KW - baryon asymmetry
KW - cosmology of theories beyond the SM
KW - supersymmetry and cosmology
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U2 - 10.1088/1475-7516/2016/06/015
DO - 10.1088/1475-7516/2016/06/015
M3 - Article
AN - SCOPUS:84976415920
SN - 1475-7516
VL - 2016
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 6
M1 - 015
ER -