Baryogenesis

Baryogenesis is a hypothetical physical process that is thought to have occurred in the very early universe. It’s the mechanism that scientists believe created the imbalance between matter (baryons) and antimatter (antibaryons) in the universe that we observe today.

In essence, it’s the process that made our universe predominantly made of matter rather than being annihilated by an equal amount of antimatter.

Why is important?

Matter-Antimatter Asymmetry: One of the fundamental mysteries of cosmology is why there’s so much more matter than antimatter in the universe. Baryogenesis provides a potential explanation for this asymmetry.
Universe’s Existence: Without this imbalance, the universe would have likely been dominated by radiation, and complex structures like stars, planets, and life would not have been possible.

Key conditions for baryogenesis:

Baryon number violation: Processes that can create or destroy baryons.
C and CP violation: Violations of charge conjugation (C) and charge-parity (CP) symmetries.
Out-of-equilibrium conditions: The process must occur under conditions far from thermal equilibrium.