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arxiv: hep-ph/0505220 · v1 · submitted 2005-05-25 · ✦ hep-ph

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The strange formula of Dr. Koide

Alejandro Rivero (Universidad de Zaragoza) , Andre Gsponer
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classification ✦ hep-ph
keywords formulakoidebibliographicaldevelopmentsextensionshistoricalleptonmass
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We present a short historical and bibliographical review of the lepton mass formula of Yoshio Koide, as well as some speculations on its extensions to quark and neutrino masses, and its possible relations to more recent theoretical developments.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. A minimization theorem for the Koide ratio and its Standard Model calibration

    hep-ph 2026-05 unverdicted novelty 6.0

    Extending any positive-mass set by one particle minimizes the Koide ratio to Q0/(1+Q0) at m* = [(sum mi)/(sum sqrt(mi))]^2; adding the charm mass to leptons yields a value only 6 ppm above the ideal 2/5.