Members of the LHCb team stand in front of their experiment, the LHCb detecor, at the Large Hadron Collider in Geneva.
By Clara Moskowitz
Observations of extremely rare subatomic particle actions have
allowed scientists to put one of the most stringent limits yet on the
reigning theory of particle physics.
Physicists at the world's largest particle accelerator, the Large
Hadron Collider (LHC) in Geneva, Switzerland, have watched a type of
particle called B mesons decay
into other particles called muons — a very unusual occurrence. By
measuring just how often this happens, the scientists can test
predictions made by the Standard Model, the theory that governs the
realm of these tiny particles. This theory is very successful at describing all of the known building blocks of matter, including the protons, neutrons and electrons that make up atoms, and many of their more exotic cousins. Yet physicists know the Standard Model is incomplete because it doesn't include dark
MORE: http://www.msnbc.msn.com/id/46632004/ns/technology_and_science-science/
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