Status of Electroweak Baryogenesis in Minimal Composite Higgs

Understand

We present an update on the status of electroweak baryogenesis in minimal composite Higgs models.

• The particularity of this framework is that the electroweak phase transition can proceed simultaneously with the confinement phase transition of the new strong dynamics that produces the composite Higgs.
• The latter transition is controlled by the dilaton - the pseudo-Goldstone boson of an approximate scale invariance of the composite sector.
• Since it naturally is first-order, the electroweak phase transition becomes first-order too.