Su(3)-breaking mechanisms for pseudoscalar-meson charge radii

Ll Ametller; C. Ayala; A. Bramon

doi:10.1103/PhysRevD.24.233

Su(3)-breaking mechanisms for pseudoscalar-meson charge radii

Ll Ametller, C. Ayala, A. Bramon

Department of Physics

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

13 Citations (Scopus)

Abstract

The sum rule r+2-rK+2=nrK02 for pseudoscalar-meson charge radii is discussed. Working at the one-loop or quark-triangle approximation and assuming moderate SU(3) breaking for the constituent quark masses, one obtains n=-52. Experimental data are compatible with this value, but contradict the value n=-1 coming from vector-meson-dominance or U-spin symmetry-breaking mechanisms. © 1981 The American Physical Society.

Original language	English
Pages (from-to)	233-235
Journal	Physical Review D
Volume	24
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.24.233
Publication status	Published - 1 Jan 1981

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title = "Su(3)-breaking mechanisms for pseudoscalar-meson charge radii",

abstract = "The sum rule r+2-rK+2=nrK02 for pseudoscalar-meson charge radii is discussed. Working at the one-loop or quark-triangle approximation and assuming moderate SU(3) breaking for the constituent quark masses, one obtains n=-52. Experimental data are compatible with this value, but contradict the value n=-1 coming from vector-meson-dominance or U-spin symmetry-breaking mechanisms. {\textcopyright} 1981 The American Physical Society.",

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AU - Bramon, A.

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N2 - The sum rule r+2-rK+2=nrK02 for pseudoscalar-meson charge radii is discussed. Working at the one-loop or quark-triangle approximation and assuming moderate SU(3) breaking for the constituent quark masses, one obtains n=-52. Experimental data are compatible with this value, but contradict the value n=-1 coming from vector-meson-dominance or U-spin symmetry-breaking mechanisms. © 1981 The American Physical Society.

AB - The sum rule r+2-rK+2=nrK02 for pseudoscalar-meson charge radii is discussed. Working at the one-loop or quark-triangle approximation and assuming moderate SU(3) breaking for the constituent quark masses, one obtains n=-52. Experimental data are compatible with this value, but contradict the value n=-1 coming from vector-meson-dominance or U-spin symmetry-breaking mechanisms. © 1981 The American Physical Society.

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