Resonances in K(l4) decays
Jun, 199215 pages
Published in:
- Phys.Rev.D 47 (1993) 1933-1941
Report number:
- DESY-92-079
Citations per year
Abstract: (APS)
The axial form factors for the Kl4 decay are calculated using models with hidden local symmetry to describe JP=1− resonances. The relation between this approach and low-energy expansion is clarified. It is shown that the explicit breaking of chiral symmetry has no significant effect on the predictions. It turns out that in order to achieve a satisfying description an additional S-wave contribution is needed, which can be described by a JP=0+ resonance.- K: semileptonic decay
- semileptonic decay: K
- form factor
- energy dependence
- hidden symmetry
- effective Lagrangian: chiral
- symmetry breaking: chiral
- symmetry: SU(3) x SU(3)
- pseudoscalar meson: mass difference
- mass difference: pseudoscalar meson
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