Surprises from the LHC's "Beauty Factory"

In an attempt to unravel how matter and antimatter differ--and why we seem to have more of one than the other in our universe--scientists at the Large Hadron Collider have been studying the production and decay of particles called B mesons. Baryons, (from the greek barus, meaning heavy) such as protons and neutrons, each contain three valence quarks, but mesons (as in meso, or middle) are two-quark systems--one quark and one antiquark. They're much less stable, contain equal amounts matter and a...