Pseudoscalar η-η′ mixing and SU(3) breaking

A. Bramon, M. D. Scadron

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50 Citations (Scopus)


The η-η′ mixing angle θP is deduced from a rather exhaustive set of data including strong and radiative decays. SU(3)-br eaking effects in terms of the constituent quark mass ratio ms/ m ̂≅1.4-1.5 are taken into account whenever necessary. They are essential in predicting θP=-14°±2°, considerably less negative than the generally accepted present value θP∼-20°. © 1990.
Original languageEnglish
Pages (from-to)346-348
JournalPhysics Letters B
Issue number3
Publication statusPublished - 11 Jan 1990


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