Following the annihilation of matter and antimatter, a nano-asymmetry of matter remains to the present day. Most of the hadrons and anti-hadrons were eliminated in annihilation reactions, leaving a small residue of hadrons. Upon elimination of anti-hadrons, the Universe was dominated by photons, neutrinos and electron-positron pairs.
Following the annihilation of matter and antimatter, a nano-asymmetry of matter persists to the present day. The majority of hadrons and anti-hadrons were eradicated in annihilation reactions, leaving behind a small remnant of hadrons. Upon the elimination of anti-hadrons, the Universe was dominated by photons, neutrinos, and electron-positron pairs.