Quad erat demonstrandum

Published: Thursday 29 February 1996

'Glueballs' are hypothetical nuclear particles that have eluded researchers for decades. If at all they exist, they are too short-lived to be observed directly. Now, after solving one million trillion arithmetic problems by running many computers for over two years, scientists at IBM claim to have demonstrated the existence of these elusive particles.

IBM scientists say that the numbers produced by their computers match the numbers derived from certain nuclear collisions in particle accelerators over the years. Researchers say their discovery is expected to bolster a widely accepted theory called quantum chromodynamics or QCD -part of a theory in particle physics known as Standard Model, that accounts for the strong nuclear force.

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