Baryogenesis

In physical cosmology, baryogenesis is the physical process that is hypothesized to have taken place during the early universe to produce baryonic asymmetry, i.e. the imbalance of matter (baryons) and antimatter (antibaryons) in the observed universe. Baryogenesis is followed by primordial nucleosynthesis, when atomic nuclei began to form. Unsolved problem in physics: Why does the observable universe have more matter than antimatter? (more unsolved problems in physics)

Baryogenesis

In physical cosmology, baryogenesis is the physical process that is hypothesized to have taken place during the early universe to produce baryonic asymmetry, i.e. the imbalance of matter (baryons) and antimatter (antibaryons) in the observed universe. Baryogenesis is followed by primordial nucleosynthesis, when atomic nuclei began to form. Unsolved problem in physics: Why does the observable universe have more matter than antimatter? (more unsolved problems in physics)