Electroweak Baryogenesis in Non-minimal Composite Higgs Models
Electroweak Baryogenesis in Non-minimal Composite Higgs Models
复制标题
DOI：
10.1088/1475-7516/2012/01/012
复制
发表时间：
2011-10
影响因子：
6.4
通讯作者：
J. Espinosa;B. Gripaios;T. Konstandin;F. Riva
中科院分区：
文献类型：
--
作者：
J. Espinosa;B. Gripaios;T. Konstandin;F. Riva
我们在复合希格斯模型的背景下解决电弱重子生成，指出修改希格斯和顶夸克部门可以发挥重要作用，产生重子不对称性。我们的主要观察结果是，在光谱中包含轻规范单重标量的复合希格斯模型（如基于对称性破缺模式SO（6）→ SO（5）的模型）为可行的重子生成提供了所有必要的成分。特别是，单线导致一个强烈的一阶电弱相变，并引入新的来源CP违反5维运营商涉及顶夸克。我们讨论了重子不对称性的产生量和实验对模型的限制。
We address electroweak baryogenesis in the context of composite Higgs models, pointing out that modifications to the Higgs and top quark sectors can play an important role in generating the baryon asymmetry. Our main observation is that composite Higgs models that include a light, gauge singlet scalar in the spectrum [as in the model based on the symmetry breaking pattern SO(6) → SO(5)], provide all necessary ingredients for viable baryogenesis. In particular, the singlet leads to a strongly first-order electroweak phase transition and introduces new sources of CP violation in dimension-five operators involving the top quark. We discuss the amount of baryon asymmetry produced and the experimental constraints on the model.