Question

where did all the antimatter go?​

Answer 1

Answer:

“The result determines directly for the first time the magnitude of the fundamental matter-antimatter asymmetry in nature,” says Paul Harrison of Queen Mary College in London, who chairs the UK’s BaBar steering committee. However, as expected, the asymmetries measured by the experiments are not large enough to explain why matter dominates the universe. Physicists will therefore have to look beyond the Standard Model – which can predict the results of most particle-physics experiments to high precision – for an explanation.