Towards a scale free electroweak baryogenesis

被引：2

作者：

Ishikawa, Kazuya ^{[1
]}

Kitahara, Teppei ^{[1
]}

Takimoto, Masahiro ^{[1
]}

机构：

[1] Univ Tokyo, Fac Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 05期

基金：

日本学术振兴会;

关键词：

MODEL CP-VIOLATION; STANDARD MODEL; BARYON ASYMMETRY; PHASE-TRANSITION; FALSE VACUUM; UNIVERSE; NUMBER;

D O I：

10.1103/PhysRevD.91.055004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 O(10) TeV, 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.

引用

页数：16

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