Source of CP Violation for the Baryon Asymmetry of the Universe

Understand

How to account for the matter predominance of our Universe is a fundamental issue at the core of our existence.

• One condition is CP violation, but the Standard Model falls short by more than $10^{-10}$.
• Taking cue from a recent result from the $B$ factories, we find that a fourth quark generation can provide enhancement by a factor of $10^{13}$ or more.
• This could be the source of CP violation for the baryon asymmetry of the Universe.