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The η-η′ mixing angle revisited

par Bramon, Albert;Escribano, RAFEL ;Scadron, Michael M.D.
Référence European Physical Journal C. Particles and Fields, 7, 2, page (271-278)
Publication Publié, 1999

Article révisé par les pairs

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Résumé :

The value of the η-η′ mixing angle θp is phenomenologically deduced from a rather exhaustive and up-to-date analysis of data including strong decays of tensor and higher-spin mesons, electromagnetic decays of vector and pseudoscalar mesons, J/ψ decays into a vector and a pseudoscalar meson, and other transitions. A value of θp between -17° and -13° is consistent with the present experimental evidence and the average θp = -15.5° ± 1.3° seems to be favoured.