My question is about the creation of the Universe. The current theory I know is that matter is the debris left after matter/antimatter annihilation at the dawn of the Universe. The question is, wouldn't such an event produce approximately equal amounts of matter and antimatter in which case there should be far less matter in the cosmos, even given the immense amounts of background radiation? Why would such an event favour the production of matter over antimatter?
My conception of matter/antimatter relations is that they are sort of like stereo isomers of one another; when space is split, it produces equal amounts of both while absorbing cosmic energy. But in biological science, only left stereoisomers exist in living organisms. These spontaneously revert to equal amounts of both left and right stereoisomeric forms at the death of the organism. Could something similar be happening at the quantum level? Or else, where is the store of all that antimatter and what are the possible mechanisms keeping us apart from it?