Clue to antimatter conundrum: Physicists find evidence for significant matter-antimatter asymmetry

Scientists at Fermi National Accelerator Laboratory have announced that they have found evidence for significant violation of matter-antimatter symmetry in the behavior of particles containing bottom quarks beyond what is expected in the current theory, the Standard Model of particle physics. The new result indicates a one percent difference between the production of pairs of muons and pairs of antimuons in the decay of B mesons produced in high-energy collisions at Fermilab's Tevatron particle collider.

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