A simple π-η-gh′ mixing model for R= Γ (ψ′ → ψπ) Γ(ψ′ → ψη) and r = Γ(ψ → η′γ) Γ(ψ → ηγ)

Ll Ametller, C. Ayala, A. Bramon

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4 Citations (Scopus)

Abstract

A joint description of the ratios r ≡ Γ(ψ → η′γ) Γ(ψ → ηγ) and R ≡ Γ(ψ′ → ψ π) Γ(ψ′ → ψη) is achieved in the context of a simple π-η-gh′ mixing model. An η-η′ mixing angle θ {reversed tilde equals} - 19.5° and a large tadpole effect for the ηπ and η′π isospinviolating transitions are required. Both requirements are in agreement with recent data for the η-meson. © 1984.
Original languageEnglish
Pages (from-to)414-418
JournalPhysics Letters B
Volume141
Issue number5-6
DOIs
Publication statusPublished - 5 Jul 1984

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