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arXiv 0710.1883hep-ph
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R不变新暴胀模型与超对称标准模型

R-invariant New Inflation Model vs Supersymmetric Standard Model

M. Ibe, Y. Shinbara

摘要:

根据最近关于暴胀子衰变或超对称破缺场产生引力子过程的讨论,我们重新讨论了R不变的新暴胀模型对超对称标准模型的影响。我们发现,超引力调解的模型与R不变的新暴胀模型,其中的引力子丰度产生的暴胀子或超对称性破缺场的衰变显着超过了宇宙学观测的界限,没有微调。我们还表明,与规范调解的模型可以一起去与R-不变的新暴胀模型,其中的暗物质和重子不对称性的解释是一致的,没有严重的微调。

英文摘要:

We revisit the implications of the R-invariant New Inflation model to the supersymmetric standard model in light of recent discussion of gravitino production processes by the decay of the inflaton or the supersymmetry breaking field. We show that the models with supergravity mediation do not go well with the R-invariant New Inflation model, where the gravitino abundance produced by the decay of the inflaton or the supersymmetry breaking field significantly exceeds the bounds from cosmological observations without fine-tuning. We also show that the models with gauge mediation can go together with R-invariant New Inflation model, where the dark matter and the baryon asymmetry are consistently explained without severe fine-tuning.

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