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Related to sigma baryon: charmed sigma baryon
Any of a group of three unstable baryons containing a strange quark and having a positive, neutral, or negative electric charge and a mass from 2,328 to 2,343 times that of an electron.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.