electroweak baryogenesis
Electroweak baryogenesis is a theoretical process that explains how the universe developed an excess of matter over antimatter shortly after the Big Bang. This phenomenon occurs during the electroweak phase transition, a period when the forces of electromagnetism and the weak nuclear force unify. As the universe cooled, certain conditions allowed for the creation of more baryons (matter particles) than antibaryons.
The process relies on CP violation, which refers to the differences in behavior between particles and their antiparticles. This asymmetry is crucial for generating the observed imbalance of matter and antimatter, leading to the formation of the matter-dominated universe we see today.