Our everyday world, however, is completely dominated by matter. Where did the antimatter go?
Scientists believe that the early universe contained as many particles as antiparticles. As they interacted with each other, a slight asymmetry in the laws of nature favored the survival of matter. Experimenters have observed this misalignment in processes involving kaons, unstable particles that contain strange quarks. The BaBar experiment at the Stanford Linear Accelerator Center and the BELLE experiment at the Japanese KEK laboratory examine whether this effect also occurs in the decay of particles containing bottom quarks. The CDF and DZero experiments at Fermilab, as well as the HERA-B experiment at the German particle physics laboratory DESY, carry out complementary research.
