The quark triangle: Application to pion and eta decays

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

doi:10.1016/0550-3213(83)90326-7

The quark triangle: Application to pion and eta decays

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

Department of Physics

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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 language	English
Pages (from-to)	301-315
Journal	Nuclear Physics, Section B
Volume	228
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(83)90326-7
Publication status	Published - 21 Nov 1983

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title = "The quark triangle: Application to pion and eta decays",

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. {\textcopyright} 1983.",

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AB - 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.

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