Baryogenesis and Gravitino Dark Matter in Gauge-Mediated Supersymmetry-Breaking Models
Baryogenesis and Gravitino Dark Matter in Gauge-Mediated Supersymmetry-Breaking Models
复制标题
规范介导的超对称破缺模型中的重子发生和引力暗物质
DOI:
10.1103/physrevd.66.123515
复制
发表时间:
2002
影响因子:
5
通讯作者:
T. Yanagida
中科院分区:
文献类型:
--
作者:
M. Fujii;T. Yanagida
We discuss two cosmological issues in a generic gauge-mediated supersymmetry (SUSY)-breaking model, namely the Universe’s baryon asymmetry and the gravitino dark-matter density. We show that both problems can be simultaneously solved if there exist extra matter multiplets of a SUSY-invariant mass of the order of the \term", as suggested in several realistic SUSY grand-unied theories. We propose an attractive scenario in which the observed baryon asymmetry is produced in a way totally independent of the reheating temperature of inflation without causing any cosmological gravitino problem. Furthermore, in a relatively wide parameter space, we can also explain the present mass density of cold dark matter by the thermal relics of the gravitinos without an adjustment of the reheating temperature of inflation. We point out that there is an interesting relation between the baryon asymmetry and the dark-matter density.
DOI:
--
发表时间:
2007
期刊:
Journal of Cosmology and Astroparticle Physics 0702
影响因子:
--
作者:
D. Jido;Y. Kanada-En'yo;M.Kawasaki
通讯作者:
M.Kawasaki
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Takeshi Fukuyama;Tatsuru Kikuchi and Nobuchika Okada;Tatsuru Kikuchi;Tatsuru Kikuchi
通讯作者:
Tatsuru Kikuchi