Murray Gell-Mann proposed the quark model as a compact organization of mesons and baryons. In his 1964 construction, the lowest baryon states use three quarks, while the lowest meson states use a quark-antiquark pair. Assigning fractional electric charges to the constituents reproduces integer charges for these combinations. The proposal connects the observed flavor symmetry multiplets with constituent quantum numbers, making a crowded particle spectrum intelligible through a small set of underlying states.[ref]
A physicist who organized hadrons through flavor symmetry and the quark model.[ref]
Figure 1.
Portrait of Murray Gell-Mann
. World Economic Forum / swiss-image.ch; photograph by Michael Wuertenberg. CC BY-SA 2.0, via Wikimedia Commons. Source.

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Murray Gell-Mann was an American physicist known for his foundational contributions to particle physics. Born on September 15, 1929, he passed away on May 24, 2019. Gell-Mann is best known for introducing the quark model in the 1960s, which describes the fundamental constituents of protons and neutrons (and hence atomic nuclei) as being made up of quarks.
Murray Gell-Mann by Ciro Santilli 40 Updated 2025-07-16
The way this dude speaks. He exhales incredible intelligence!!!
In the interviews you can see that he pronounces names in all languages amazingly, making acute effort to do so, to the point of being notable. His passion for linguistics is actually mentioned on Genius: Richard Feynman and Modern Physics by James Gleick (1994).
Maybe this obsession is partly due to his name which no English speaking person knows how to pronounce from the writing.
This passion also led in part for his names to some physics terminology he worked on winning out over alternatives by his collaborators, most notably in the case of the naming of the quark.