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arXiv 2108.03580hep-ph
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CP破坏的双Higgs偶态模型中的电弱重子生成

Electroweak Baryogenesis in the CP-Violating Two-Higgs Doublet Model

Philipp Basler, Margarete Mühlleitner, Jonas Müller

摘要:

最近,我们将计算电弱相变(EWPT)的程序BSMPT升级为BSMPT v2,其中包括计算CP破坏的2-Higgs-Doublet模型(C2 HDM)中的宇宙重子不对称性(BAU)。在本文中,我们使用{ \tt BSMPT v2}调查的BAU的大小,在C2 HDM中获得的两个实现的方法FH和VIA导出的输运方程,考虑到所有相关的理论和实验约束。我们确定的相似之处和差异,计算结果与这两种方法。特别是,我们分析了成功的重子生成相关的参数上获得的BAU的依赖。我们的调查使我们能够确定未来的方向,无论是在计算的BAU和模型建设采取的可能途径的改进。

英文摘要:

Recently we presented the upgrade of our code BSMPT for the calculation of the electroweak phase transition (EWPT) to BSMPT v2 which now includes the computation of the baryon asymmetry of the universe (BAU) in the CP-violating 2-Higgs-Doublet Model (C2HDM). In this paper we use {\tt BSMPT v2} to investigate the size of the BAU that is obtained in the C2HDM with the two implemented approaches FH and VIA to derive the transport equations, by taking into account all relevant theoretical and experimental constraints. We identify similarities and differences in the results computed with the two methods. In particular, we analyse the dependence of the obtained BAU on the parameters relevant for successful baryogenesis. Our investigations allow us to pinpoint future directions for improvements both in the computation of the BAU and in possible avenues taken for model building.

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