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a new particle

I didn't see anything about this last week in other places (or maybe it hasn't been widely reported?), anyway: a new particle, the pentaquark, has been found. Quote:

James Joyce would have been delighted. Quarks, one of the basic building-blocks of matter, were named in the 1960s after a line from his novel “Finnegans Wake”—three quarks for Muster Mark!—because they were then thought to come in three types (the number is now known to be six). Protons and neutrons, however, do consist of three quarks each. And physicists have now discovered a particle that is made of five quarks—a bit of a promotion for Muster Mark.

Categories: science
Posted by diego on July 9 2003 at 12:30 AM

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