Baryogenesis and Gravitino Dark Matter in Gauge-Mediated Supersymmetry-Breaking Models

Baryogenesis and Gravitino Dark Matter in Gauge-Mediated Supersymmetry-Breaking Models
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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
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发表时间:
2002
期刊:
影响因子:
5
通讯作者:
T. Yanagida
T. Yanagida
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Fujii;T. Yanagida

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本文讨论了规范介导超对称性破缺模型中的两个宇宙学问题,即宇宙的重子不对称性和引力子暗物质密度。我们表明,这两个问题可以同时解决,如果存在额外的物质多重态的超对称性不变的质量的\“的顺序,建议在几个现实的超对称性大统一理论。我们提出了一个有吸引力的方案,其中观察到的重子不对称性的产生方式完全独立于再加热温度的膨胀,而不会引起任何宇宙学引力子问题。此外,在较宽的参数空间内,我们还可以用引力子的热残余来解释冷暗物质的质量密度,而不需要调整暴胀的再加热温度。我们指出,重子不对称性与暗物质密度之间存在着一种有趣的关系。
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.
异常介导的 SUSY 断裂中的阿弗莱克-丁重子发生
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
Z-prime 介导的 SUSY 破坏场景
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