The origin of the matter/antimatter asymmetry manifest in our world is of fundamental interest and remains outside the scope of the now "Standard Model" of particle interactions. The theoretical structure of the Standard Model can accommodate matter/antimatter asymmetries, but the dynamical origin of these effects must reside at a level of understanding beyond the Standard Model. After 33 years of hard work since the original observation of these asymmetries in the neutral kaon system we are now at the threshold of performing measurements of striking new asymmetry effects expected in the Standard Model. These effects manifest themselves through "CP violation" in the mixing and decay amplitudes of K and B meson decays where the Standard Model predicts large effects.
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