Constituent-quark and baryon loops in pseudoscalar-meson transitions

Ll Ametller; C. Ayala; A. Bramon

doi:10.1103/PhysRevD.29.916

Constituent-quark and baryon loops in pseudoscalar-meson transitions

Ll Ametller, C. Ayala, A. Bramon

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

16 Citations (Scopus)

Abstract

Predictions for the coupling, the pion charge radius r+2, the q2 dependence of the pion decay constant near q2=0 [f(0)], and the ratio describing radiative pion decay are obtained in the context of two related models: the constituent-quark model and a baryon-loop model with nf=2, 3, or 4 flavors. All these models lead to two relations among the four above-mentioned parameters, which are satisfied by the data. A sort of equivalence or duality for the two models is observed, particularly for nf=4. © 1984 The American Physical Society.

Original language	English
Pages (from-to)	916-920
Journal	Physical Review D
Volume	29
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.29.916
Publication status	Published - 1 Jan 1984

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title = "Constituent-quark and baryon loops in pseudoscalar-meson transitions",

abstract = "Predictions for the coupling, the pion charge radius r+2, the q2 dependence of the pion decay constant near q2=0 [f(0)], and the ratio describing radiative pion decay are obtained in the context of two related models: the constituent-quark model and a baryon-loop model with nf=2, 3, or 4 flavors. All these models lead to two relations among the four above-mentioned parameters, which are satisfied by the data. A sort of equivalence or duality for the two models is observed, particularly for nf=4. {\textcopyright} 1984 The American Physical Society.",

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AB - Predictions for the coupling, the pion charge radius r+2, the q2 dependence of the pion decay constant near q2=0 [f(0)], and the ratio describing radiative pion decay are obtained in the context of two related models: the constituent-quark model and a baryon-loop model with nf=2, 3, or 4 flavors. All these models lead to two relations among the four above-mentioned parameters, which are satisfied by the data. A sort of equivalence or duality for the two models is observed, particularly for nf=4. © 1984 The American Physical Society.

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