Electromagnetic selfenergies of pseudoscalar mesons and Dashen's theorem
Jan 22, 1993
18 pages
Published in:
- Phys.Rev.D 47 (1993) 2089-2097
Report number:
- UMHEP-376,
- ZU-TH-34-92
Citations per year
Abstract: (APS)
The calculation of the electromagnetic mass shifts of π, K mesons is studied using a model incorporating chiral symmetry and vector dominance. Significant SU(3) breaking to Dashen's theorem is found, allowing a resolution of the long-standing discrepancy between the quark-mass ratio (md−mu)ms found from η→3π decay and that from the K+−K0 mass difference.- symmetry: chiral
- symmetry: SU(3) x SU(3)
- symmetry breaking: SU(3)
- mass difference: (pi+ pi0)
- (pi+ pi0): mass difference
- mass difference: (K0 K+)
- (K0 K+): mass difference
- mass difference: electromagnetic
- electromagnetic: mass difference
- vector dominance
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