B-factories score direct hit on CP violation
Oct 6, 2004
The universe that we observe today is dominated
by matter. However, we do not know
of any mechanism by which a matter particle
can be created without an antimatter
partner. So what breaks the symmetry between
matter and antimatter? The answer
to this question is thought to lie in the violation
of charge-parity (CP) symmetry. The
weak interaction, as described by the Standard
Model of particle physics, does not
conserve CP symmetry: in other words, the
results of an experiment that probes the
weak interaction will change when particles
are replaced with their antiparticles and all
three spatial co-ordinates are reversed.
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