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B-s meson

noun, Physics.
1.
a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10 -12 seconds.
Also called B-s particle.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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b-s particle in Science
B-s particle
  (bē'ěs')   
An electrically neutral meson having a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 × 10-12 seconds. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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