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Joined 2026-09-21 Message
Incoming links: Murray Gell-Mann
Gell-Mann and Zweig quark models 2026-10-18
In his 1964 paper, Murray Gell-Mann proposed fractional-charge quarks, constructing baryons and mesons from them. He also distinguished a mathematical constituent model from the hypothesis of finite-mass physical particles. The successful bookkeeping did not itself settle that distinction.[ref]
A Schematic Model of Baryons and Mesons by Murray Gell-Mann. pp.214–215: triplet construction and discussion of physical versus mathematical quarks
George Zweig's 1964 CERN model used three constituents called aces, with fractional electric charge and baryon number . Its abstract also proposed an experimental search.[ref]
An SU3 Model for Strong Interaction Symmetry and Its Breaking (Version 2) by George Zweig. Version2 title page and abstract, dated21February1964
The theoretical construction and the experiment that might discriminate between interpretations are separate parts of the argument. The Omega baryon discovery experiment illustrates the power of testing an incomplete particle pattern against new observations. Nobel Prize in Physics in 1969 2026-10-18
Awarded to Murray Gell-Mann for discoveries concerning the classification of elementary particles and their interactions.[ref]
The Nobel Prize in Physics 1969 by Nobel Prize Outreach. Reproduced individual official 1969 record: sole laureate, classification of elementary particles and their interactions.