Mixtures of quarkonium and gluonium

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1985 English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 32, pages 1,739-1,743 (issn: 0556-2821,

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Authors: , Frank; , O'Donnell;

doi: 10.1103/physrevd.32.1739

pmid: 9956339

Mixtures of quarkonium and gluonium

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Abstract

We study the 2\ensuremath{\gamma} decays of the light pseudoscalar mesons in a model that allows the isoscalar states to have a significant gluonium component, and show that the rates are in good agreement with experiment. The amount of radial mixing in \ensuremath{\eta},\ensuremath{\eta}' states determines these decays completely. This makes it difficult to test for the presence of gluonium. The radiative decays of \ensuremath{\psi}'(3685) might be a better way to test for the gluonium admixture. We give estimates for the branching ratios.

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