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baryon number

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baryon number [′bar·ē‚än ‚nəm·bər]
(particle physics)
A quantum number equal to the number of baryons minus the number of antibaryons in a system; it is conserved at the present level of detection, but may not be exactly conserved.
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The hypothetical force also would differ from gravity, which acts on matter in proportion to mass, by influencing atoms on the basis of baryon number -- the sum of neutrons and protons.
Alternate source of fifth force challenged by Knox, Charles / Science News
The baryon number is related to the number of neutrons and protons, and therefore to the chemical composition of a material--thus explaining the difference in force for different materials.
Was a fifth force felt? by Thomsen, Dietrick E. / Science News
 
 
 
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