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Particle physics

Weighty questions

In an unprecedented feat of computation, particle theorists made the most precise prediction yet of the mass of the ‘charm–bottom’ particle. Days later, experimentalists dramatically confirmed that prediction.

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Figure 1: Gregarious quarks.
Figure 2: Perfect harmony.

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Shipsey, I. Weighty questions. Nature 436, 186–187 (2005). https://doi.org/10.1038/436186a

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