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delta baryon[′del·tə ′bar·ē‚än]
Any excited baryon state belonging to a multiplet having a total isospin of ³⁄₂, a hypercharge of +1, a spin of ³⁄₂, positive parity, and an approximate mass of 1232 MeV. Designated Δ(1232).
Any excited baryon state belonging to any multiplet having a total isospin of ³⁄₂ and a hypercharge of +1.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.