Towards a Scale Free Electroweak Baryogengesis

Towards a Scale Free Electroweak Baryogengesis
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迈向无标度电弱重生

DOI:
10.1103/physrevd.91.055004
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发表时间:
2014
期刊:
Phys. Rev. D
影响因子:
--
通讯作者:
M. Takimoto
M. Takimoto
中科院分区:
--
文献类型:
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作者:
K. Ishikawa;T. Kitahara;M. Takimoto

文献摘要

相似文献

我们在高尺度超对称(SUSY)模型中提出了一种新的电弱重子发生场景。我们考虑了最小SUSY标准模型的单重态扩展,引入了附加的类向量多重态。我们发现在与软SUSY断裂尺度相当的高温下可以发生强烈的一阶相变。此外,在类矢量多重扇区中,通过轻子数违反过程可以产生适当数量的宇宙重子不对称性。我们的场景的典型尺度,即软超对称性破裂尺度,可以是任何值。因此,我们的新电弱重子生成场景可以在任意尺度上实现,我们称之为尺度自由电弱重子生成场景。此软超高压破标由其他要求决定。如果软超对称性破缺尺度存在,则我们的情景与观测到的希格斯玻色子质量以及电偶极矩测量和味道实验的约束是相容的。此外,单线子可能是暗物质的一个很好的候选者。
We propose a new electroweak baryogenesis scenario in high-scale supersymmetric (SUSY) models. We consider a singlet extension of the minimal SUSY standard model introducing additional vectorlike multiplets. We show that the strongly first-order phase transition can occur at a high temperature comparable to the soft SUSY breaking scale. In addition, the proper amount of the baryon asymmetry of the Universe can be generated via the lepton number violating process in the vectorlike multiplet sector. The typical scale of our scenario, the soft SUSY breaking scale, can be any value. Thus our new electroweak baryogenesis scenario can be realized at arbitrary scales, and we call this scenario scale free electroweak baryogenesis. This soft SUSY breaking scale is determined by other requirements. If the soft SUSY breaking scale is, our scenario is compatible with the observed mass of the Higgs boson and the constraints by electric dipole moment measurements and flavor experiments. Furthermore, the singlino can be a good candidate for dark matter.