论文标题
伪造的伪石暗物质模型与CP违规
Pseudo-Goldstone Dark Matter Model with CP violation
论文作者
论文摘要
我们考虑了一个具有两个Higgs Doublets和一个复杂的单线标量的明确CP侵入模型。 Singlet $ s $由全球$ \ rm u（1）$对称性收取，该$ symmetry被质量项$μ^2 s^2+\ hc $柔和地打破。 $ s $的假想部分是一个稳定的暗物质候选者，在零动量转移的限制下，在树级上，从核子中解除了自然满足暗物质散射横截面上所有现有的直接检测极限。明确表明的是，在对齐限制中，CP暴力中仍然存在与流行版本的2-higgs Doublet模型相比，具有柔和损坏的$ z_2 $对称性。在这种情况下，我们研究了标量部门中有或没有CP违规的模型的暗物质含义。特别是，计算了深色物质遗物丰度，并讨论了其间接检测的可能性。
We consider an explicitly CP-violating model with two Higgs doublets and one complex singlet scalar. The singlet $S$ is charged under a global $\rm U(1)$ symmetry which is softly broken by a mass term $μ^2 S^2+\hc$. Imaginary part of $S$ is a stable dark matter candidate which at the tree level, in the limit of zero momentum transfer, decouples from nucleons naturally satisfying all existing direct detection limits on dark matter scattering cross-section. It is explicitly shown that within this framework in the alignment limit CP-violation is still present in contrast to a popular version of a 2-Higgs doublet model with softly broken $Z_2$ symmetry. In this context, we investigate dark matter implications of the model both with and without CP violation in the scalar sector. In particular, dark matter relic abundance is calculated and the possibility for its indirect detection is discussed.
