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In particle physics, the baryon number is a strictly conserved additive quantum number of a system. It is defined as
B = 1 3 ( n q − n q ¯ ) , {\displaystyle B={\frac {1}{3}}\left(n_{\text{q}}-n_{\bar {\text{q}}}\right),}where nq is the number of quarks, and nq is the number of antiquarks. Baryons (three quarks) have a baryon number of +1, mesons (one quark, one antiquark) have a baryon number of 0, and antibaryons (three antiquarks) have a baryon number of −1. Exotic hadrons like pentaquarks (four quarks, one antiquark) and tetraquarks (two quarks, two antiquarks) are also classified as baryons and mesons depending on their baryon number.
referencePosted on 29 Apr 2022, this text provides information on Miscellaneous in Academic & Science related to Academic & Science. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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