sigma baryon

sigma particle

noun Physics.
an unstable hyperon having positive, negative, or zero electric charge and strangeness −1. Symbol: Σ
Also called sigma baryon.


Origin:
1960–65

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To sigma baryon
American Heritage
Science Dictionary
sigma baryon  
Any of three unstable subatomic particles in the baryon family, having a mass 2,328 to 2,343 times that of the electron and a positive, neutral, or negative electron charge. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature