论文标题
CP违规的黑暗部门中的Electroweak相过渡
Electroweak Phase Transition in a Dark Sector with CP Violation
论文作者
论文摘要
在本文中，我们调查了模型“黑暗中的CP”中强一阶电子相变（SFOEWPT）的可能性。该模型的希格斯扇区由两个标量双线和一个带有特定离散对称性的标量单元组成。自发对称性破坏模型后，该模型具有标准模型的现象学和一个隐藏的标量扇区，具有可行的暗物质候选者，该候选者被补充，该候选者受到显式CP违规，仅发生在隐藏的扇区中。在C ++代码BSMPT v2.3中实现了模型“ CP”，该模型对有限的一环校正了有效的有效潜力并搜索SFOEWPTS的全局最小化。发现在广泛的参数空间中允许使用SFOEWPT。此外，在有限温度下会产生自发违规的参数方案。另外，自发损坏的$ \ Mathbb {z} _2 $对称性会导致黑暗和可见扇区之间的混合，因此在有限温度下促进了黑暗中的CP违规行为，从而向可见的扇区促进了CP违规源，从而不受电动型载液矩测量的限制，而在零温度下，这一违规措施不受电动型电动机矩测量的限制。因此，“黑暗中的CP”为通过电动baryogenogeny生成宇宙的重子不对称提供了有希望的候选者。
In this paper, we investigate the possibility of a strong first-order electroweak phase transition (SFOEWPT) in the model `CP in the Dark'. The Higgs sector of the model consists of two scalar doublets and one scalar singlet with a specific discrete symmetry. After spontaneous symmetry breaking the model has a Standard-Model-like phenomenology and a hidden scalar sector with a viable Dark Matter candidate supplemented by explicit CP violation that solely occurs in the hidden sector. The model `CP in the Dark' has been implemented in the C++ code BSMPT v2.3 which performs a global minimisation of the finite-temperature one-loop corrected effective potential and searches for SFOEWPTs. An SFOEWPT is found to be allowed in a broad range of the parameter space. Furthermore, there are parameter scenarios where spontaneous CP violation is generated at finite temperature. The in addition spontaneously broken $\mathbb{Z}_2$ symmetry then leads to mixing between the dark and the visible sector so that CP violation in the dark is promoted at finite temperature to the visible sector and thereby provides additional sources of CP violation that are not restricted by the electric dipole moment measurements at zero temperature. Thus, `CP in the Dark' provides a promising candidate for the generation of the baryon asymmetry of the universe through electroweak baryogenesis.
