Meson octet diagram

Meson octet diagram

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Credit: SCIENCE PHOTO LIBRARY

Caption: Meson octet. Diagram organising mesons into an octet according to their charge and strangeness. Particles along the same diagonal line share the same charge; positive (+1), neutral (0), or negative (-1). Particles along the same horizontal line share the same strangeness. Strangeness is a quantum property that is conserved in strong and electromagnetic interactions, between particles, but not in weak interactions. Mesons are made up of one quark and one antiquark. Particles with a strangeness of +1, such as the kaons (blue and red) in the top line, contain one strange antiquark. Particles with a strangeness of 0, such as the pion mesons (green) and eta meson (yellow) in the middle line, contain no strange quarks. Particles with a strangeness of -1, such as the antiparticle kaons (pink) in the bottom line, contain one strange quark.

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Keywords: antiparticle, artwork, charge, classification, diagram, eightfold way, eta, flavor, flavour symmetry, grouping, kaon, meson, meson octet, mesons, murray gell-mann, negative, neutral, particle physics, particles, physical, physics, pion, positive, quantum physics, strange antiquark, strange quarks, strangeness, subatomic particle, theory, white background

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