论文标题
高温电动electroweak对称性通过SM双胞胎打破
High-Temperature Electroweak Symmetry Breaking by SM Twins
论文作者
论文摘要
我们分析了对双Higgs模型的可能调整，该模型允许在Sigma-Model量表以下的所有温度下损坏Electroweak（EW）对称性$ \ sim 1 $ TEV。修改包括增加光sm fermions双胞胎的Yukawa耦合。因此，自然性考虑意味着存在相对较轻的电荷费仪，可以在LHC处产生，并腐烂到SM仪表和Higgs玻色子和缺失的能量。对实验界限的分析表明，与原始的双Higgs模型相比，这种修改的模型的微调量增加，但调整仍然比通常的pseudo-nambu-goldstone Higgs型号不超过$ z_2 $对称性。 EW对称性破坏强度的演变中获得的修改可能对我们评论的EW男性生成模型具有有趣的含义。
We analyse a possible adjustment of Twin Higgs models allowing to have broken electroweak (EW) symmetry at all temperatures below the sigma-model scale $\sim 1$TeV. The modification consists of increasing the Yukawa couplings of the twins of light SM fermions. The naturalness considerations then imply a presence of relatively light electroweak-charged fermions, which can be produced at the LHC, and decay into SM gauge and Higgs bosons and missing energy. Analysis of experimental bounds shows that such a modified model features an increased amount of fine-tuning compared to the original Twin Higgs models, but still less tuning than the usual pseudo-Nambu-Goldstone Higgs models not improved by $Z_2$ symmetry. The obtained modification in the evolution of the EW symmetry breaking strength can, in particular, have interesting implications for models of EW baryogenesis, which we comment on.
