Electroweak Baryogenesis in Composite Higgs Models
Electroweak baryogenesis is an appealing scenario in which the baryon asymmetry of the universe is generated during the electroweak phase transition. However, in the standard model it fails because the phase transition is not first order. And even if it were, the amount of CP-violation is also not enough to generate the observed asymmetry. In this talk, I discuss how these problems can be solved in the context of composite Higgs models. The electroweak phase transition can be sufficiently strong if it happens simultaneously with the confining phase transition of the composite Higgs sector. Furthermore, enough CP-violation for successful electroweak baryogenesis can arise if the Yukawa couplings vary during the phase transition.
HEP Von Harling Nov10 flyer