8 August 2004

Dramatic differences found in matter and antimatter

The international BaBar collaboration working at the Stanford Linear Accelerator Center (SLAC) in the US has found the most dramatic evidence to date for the difference between matter and antimatter. The experiment has found that the number of decays observed for a class of particles known as B mesons is 13% higher than for their antiparticle equivalents -- anti-B mesons (arXiv.org/abs/hep-ex/0407057). The results could help explain why the universe is dominated by matter, rather than anti-matter, or why it does not contain equal amounts of both.

That's a really, really understated headline...

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