Pseudoscalar transitions between high-spin resonances
Abstract
Pseudoscalar transitions between high-spin resonances, which involve two or more independent coupling constants, are considered. The overall ratios among decay amplitudes are derived from the correlations between different types of decay amplitudes by assuming SU(2)W symmetry or ignoring the higher partial waves. The corresponding expressions for decay widths are then derived and used to test SU(3) symmetry for transitions between high-spin resonances. We find that SU(3) symmetry is severely broken for the decays of spin-7/2 baryons. When SU(3) symmetry is combined with time-reversal invariance, some interesting restrictions on the ratios between decay widths are obtained. The centrifugal-barrier factors are also discussed.
- Publication:
-
Physical Review D
- Pub Date:
- September 1977
- DOI:
- 10.1103/PhysRevD.16.1489
- Bibcode:
- 1977PhRvD..16.1489L