News of the WeekParticle Physics

A Second Hint of Symmetry Violation

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Science  18 Dec 1998:
Vol. 282, Issue 5397, pp. 2169-2171
DOI: 10.1126/science.282.5397.2169

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Summary

Ever since experimenters studying the decay of particles called kaons in 1964 were tantalized by an effect called CP violation, they have been eager to get a second look at it, because this basic asymmetry in physics could explain why the universe contains more matter than antimatter. Now another case of CP violation may finally be showing itself, in particles called B mesons.