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 | |
| Publication status | Published - 1 Jan 1981 |