omega baryon

[ oh-meg-uh-bar-ee-on, oh-mee-guh, oh-mey‐ ]

  1. a negative baryon having a mass 3272 times that of the electron and a mean lifetime of 8 X 10-11 seconds.

Words Nearby omega baryon Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Scientific definitions for omega baryon

omega baryon

  1. A subatomic particle in the baryon family, consisting of three strange quarks. It has a mass 3,272 times that of the electron, a negative electric charge, and an average lifetime of 8 X 10-11 seconds. The 1964 experimental observation of this particle was a great triumph in the history of particle physics, because its existence, mass, and method of decay had been predicted based on the model of baryons, but it had not yet been isolated. See Table at subatomic particle.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.