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 |
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Pages (from-to) | 233-235 |
Journal | Physical Review D |
Volume | 24 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 1981 |