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QUARK DISCOVERY IS NO SMALL MATTER

Scientists have discovered evidence of the top quark, the missing subatomic piece in the theory of matter, published reports say.

The top quark is one of 12 subatomic particles -- six quarks and six leptons -- in the Standard Model theory, which defines what is known of the atom and its structure and is central to understanding the nature of time, matter and the universe. Eleven of those particles had been found.

Though unlikely to affect everyday life, the finding, if confirmed, would be a major breakthrough in physics. Without the top quark, the Standard Model would collapse.

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