baryon number


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baryon number

n. Abbr. B
A quantum number equal to the difference between the number of baryons and the number of antibaryons in a system of subatomic particles. The baryon number remains the same throughout any reaction and is one-third of the quark number.
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Noun1.baryon number - a number equal to the difference between the number of baryons and the number of antibaryons in any subatomic structure; it is conserved in all types of particle interactions
number - a concept of quantity involving zero and units; "every number has a unique position in the sequence"
References in periodicals archive ?
The proton is stable, because it's the lightest baryon and the baryon number is conserved.
In the minimal supersymmetric standard model (MSSM), unlike in the SM, the conservation of lepton number (L) and of baryon number (B) is not automatic: the superpotential can contain renormalizable and gauge invariant L- and B-violating terms.
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.