From how we expect the Big Bang must have developed, huge amounts of both matter and antimatter quarks and electron/positrons were created. Most of the total matter was destroyed in matter/antimatter annihilations. With our resulting universe containing normal matter due to some asymmetry developing with slightly more matter than antimatter. Presumably the defined mechanism for creating matter/antimatter from the early plasma while gravity weak and strong forces became independent should have created equal amounts of both. Assuming that defined mechanism is a good one a potential source for the asymmetry allowing the matter needed to establish the world as we now know it might have occurred during the “inflation” process prior to settling into the Hubble expansion we know somewhat better. Does anyone know a good link or resource that discusses how much mass (matter/antimatter) is expected to have gone into the matter/antimatter annihilation process relative the amount of matter that remained by the time of Last Scattering? Said another way just how small was the asymmetry between matter/antimatter? From what I’ve been able to find I’m unclear on when the matter/antimatter annihilation process took place; was it during “Inflation” before 3 minutes, or during Big-Bang nucleosynthesis 3 to 20 minutes or both?