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J/psi particle: Meaning and Definition of

J/psi particle

Pronunciation: ( jā'sī', -psī'), [key]
— Physics. Physics.
  1. the lightest of the psi particles, the first particle to be discovered that contains a charmed quark.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
Jpn. Jr.
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