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omega baryon

noun, Physics.
a negative baryon having a mass 3272 times that of the electron and a mean lifetime of 8 X 10 -11 seconds.
Also called omega. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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omega baryon in Science
omega baryon  
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 × 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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