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chi meson[‚kī ′mā‚zän]
A meson resonance of mass 958 MeV/ c 2, designated χ0, which has 0 isospin and charge, negative parity, positive G parity, and spin probably equal to 0. Also known as eta-prime meson (η′). Also denoted η′A (958).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.