Su(3)-breaking mechanisms for pseudoscalar-meson charge radii
- 1 July 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 24 (1), 233-235
- https://doi.org/10.1103/physrevd.24.233
Abstract
The sum rule 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 . Experimental data are compatible with this value, but contradict the value coming from vector-meson-dominance or -spin symmetry-breaking mechanisms.
Keywords
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