The quark triangle: Application to pion and eta decays

Ll Ametller, L. Bergström, A. Bramon, E. Massó

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Abstract

A general expression for the two-photon form factor of neutral pseudoscalar mesons is given in a quark triangle model. Various electromagnetic decay amplitudes are calculated, including Dalitz pair decays and the rare decay into a lepton pair, where an old calculation in a similar (nucleon loop) model is corrected. The results are in agreement with other calculations based on vector meson dominance, giving a new example of Q2 duality. Some remarks concerning the soft limit in the processes are given. © 1983.
Original languageEnglish
Pages (from-to)301-315
JournalNuclear Physics, Section B
Volume228
Issue number2
DOIs
Publication statusPublished - 21 Nov 1983

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    Ametller, L., Bergström, L., Bramon, A., & Massó, E. (1983). The quark triangle: Application to pion and eta decays. Nuclear Physics, Section B, 228(2), 301-315. https://doi.org/10.1016/0550-3213(83)90326-7