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Eightfold way (physics)
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{{Short description|Classification scheme for hadrons}} [[Image:meson octet.png|thumb|The [[pseudoscalar meson]] octet. Particles along the same horizontal line share the same [[Strangeness (particle physics)|strangeness]], {{mvar|s}}, while those on the same left-leaning diagonals share the same [[electric charge|charge]], {{mvar|q}} (given as multiples of the [[elementary charge]]).]] In [[physics]], the '''eightfold way''' is an organizational scheme for a class of subatomic particles known as [[hadron]]s that led to the development of the [[quark model]]. Both the American physicist [[Murray Gell-Mann]] and the Israeli physicist [[Yuval Ne'eman]] independently and simultaneously proposed the idea in 1961.<ref name=Gell-Mann-1961-TID-12608/><ref name=Ne-eman-1961-08/>{{efn| In Gell-Mann's 1961 paper, Reference 6 says {{blockquote|After the circulation of the preliminary version of this work (January 1961) the author has learned of a similar theory put forward independently and simultaneously by [[Yuval Ne'eman|Y. Ne'eman]] ([[Nuclear Physics (journal)|Nuclear Physics]], to be published). Earlier uses of the 3 dimensional unitary group in connection with the [[Sakata model]] are reported by Y. Ohnuki at the 1960 Rochester Conference on High Energy Physics. [[Abdus Salam|A. Salam]] and J. Ward ([[Nuovo Cimento]], to be published) have considered related questions. The author would like to thank Dr. Ne'eman and Professor Salam for communicating their results to him.}} while the very end of Ne'eman's (1961) paper reads, {{blockquote|I am indebted to Prof. A. Salam for discussions on this problem. In fact, when I presented this paper to him, he showed me a study he had done on the unitary theory of the Sakata model, treated as a gauge, and thus producing a similar set of vector bosons. Shortly after the present paper was written, a further version, utilizing the 8 representation for baryons, as in this paper, reached us in a [[preprint]] by Prof. [[Murray Gell-Mann|M. Gell Mann]].}} }} The name comes from Gell-Mann's (1961) paper and is an allusion to the [[Noble Eightfold Path]] of [[Buddhism]].<ref name=Young-Freedman-2004-Sears-Zemansky/>
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