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arXiv 2301.09004hep-ph
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“黑暗中的CP”和一个强一级电弱相变

`CP in the Dark' and a Strong First-Order Electroweak Phase Transition

Lisa Biermann, Margarete Mühlleitner, Jonas Müller

摘要:

我们调查的潜力的模型“CP在黑暗中”提供一个强大的一阶电弱相变(SFOEWPT),考虑到所有相关的理论和实验约束。对于推导的强度的相变,我们使用一个循环校正,菊花形有效势在有限的温度下,在C++代码BSMPT,以确定在临界温度的全局最小值。“黑暗中的CP”模型提供了暗物质(DM)候选者以及暗扇区中明确的CP破坏。我们找到了一个广泛的可行的参数点提供SFOEWPT。它们在XENON1T和未来不可见的希格斯衰变搜索DM的范围内。"黑暗中的CP“还提供了SFOEWPT点,其特征是在有限温度下自发的CP破坏。不仅有一个SFOEWPT,提供了必要的偏离热平衡,但也有一个额外的非标准的CP破坏的来源,打开了一个有希望的大门,使重子不对称的宇宙(BAU)的产生通过电弱重子生成。

英文摘要:

We investigate the potential of the model `CP in the Dark' for providing a strong first-order electroweak phase transition (SFOEWPT) by taking into account all relevant theoretical and experimental constraints. For the derivation of the strength of the phase transition we use the one-loop corrected, daisy-resummed effective potential at finite temperature, implemented in the C++ code BSMPT, to determine the global minimum at the critical temperature. The model `CP in the Dark' provides a dark matter (DM) candidate as well as explicit CP violation in the dark sector. We find a broad range of viable parameter points providing an SFOEWPT. They are within the reach of XENON1T and future invisible Higgs decay searches for DM. `CP in the Dark' also offers SFOEWPT points that feature spontaneous CP violation at finite temperature. Having not only an SFOEWPT that provides the necessary departure from thermal equilibrium, but also a source of additional non-standard CP violation, opens a promising gate towards enabling the generation of the baryon asymmetry of the universe (BAU) through electroweak baryogenesis.

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