Regularities in electromagnetic decay widths
classification
✦ hep-ph
keywords
regularitiesgammawidthsconstantdecaydecayselectromagneticextending
read the original abstract
We revisit Sakurai's remark on the regularities of lepton-pair widths for mesons, extending the panorama to radiative $X \to \gamma \gamma$ and total decays. The regularities persist, and somehow surprisingly some of them seem to relate with Fermi's constant -or $Z^0$-.
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