If the universe began as a cauldron of massless high energy photons, how did matter arise? Electrons and neutrinos are the smallest matter entities, so they are the most likely candidates for the first matter.
QR4.3.2. The Charge Byproduct
QR4.3.3. The Neutrino Byproduct
QR4.3.4. The Anti-matter Byproduct
QR4.3.5. Where did the Anti-matter Go?