Spontaneous $CP$-Violating Electroweak Baryogenesis and Dark Matter from a Complex Singlet Scalar

Understand

CP non-invariance is strongly limited by present experiments, while extra sources of CP-violation are needed for a successful baryogenesis.

• Motivated by those observations we consider a model which predicts spontaneous violation of CP at high temperature and restoration of CP at present temperature of the Universe.
• In addition we propose a dark matter (DM) candidate that meets all known properties of DM.
• Looking for a minimal model that satisfies the above conditions leads us to extending the Standard Model (SM) of fundamental interactions by adding a complex singlet scalar $S$.