论文标题
双Higgs模型中的一阶相变
First-order phase transitions in Twin Higgs models
论文作者
论文摘要
我们重新访问双Higgs（Th）模型中的相变。我们表明，如果存在$ \ mathbb {z} _2 $对称性的适当来源，则可以发生强大的一阶相变（FOPT）。我们在两类模型中找到了FOPT。首先：使用硬$ \ mathbb {z} _2 $打破标量电势，允许FOPT。第二：用$ \ mathbb {z} _2 $通过增强的双卵子的Yukawa耦合破裂。我们还考虑了使用轻型Slectons的第二种情况的超对称紫外线完成。在这些相跃迁期间产生的引力波的信号通常很小，但在光双胞胎Slepton引起的FOPT的情况下，可以接近Age和Einstein望远镜的触手可及。我们的结果开辟了一种在TH模型中生成SM Baryon不对称性的方法。
We revisit phase transitions in Twin Higgs (TH) models. We show that strong first-order phase transitions (FOPTs) can occur provided that appropriate source of $\mathbb{Z}_2$ symmetry breaking between the twin and Standard Model (SM) sectors is present. We found FOPTs in two classes of models. First: with hard $\mathbb{Z}_2$ breaking in the scalar potential allowing for FOPT. Second: with $\mathbb{Z}_2$ broken by enhanced Yukawa couplings of twin leptons. We also considered supersymmetric UV completion of the second scenario with light sleptons. The signal of gravitational waves produced during these phase transitions is typically small but can be close to the reach of AEDGE and Einstein Telescope in the case of the FOPT induced by light twin sleptons. Our results open a way to generate SM baryon asymmetry in TH models.
