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Wild Bunch: First five-quark particle turns up

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12:57pm, July 1, 2003

Physicists on three international teams have recently spotted what's most likely a long-sought subatomic particle known as a pentaquark. It contains five components–four quarks and one antiquark–which are among the most fundamental bits of matter yet known. No subatomic particle detected previously contains more than three of those building blocks.

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