We have measured the branching ratio for the radiative decay ω → ηγ with ω mesons produced in antiproton-proton annihilation at rest into π0ω and ηω. Taking into account ρ - ω mixing we find a branching ratio B(ω - ηγ) = (6.6 ± 1.7) × 10-4, in accord with the constructive interference solution in other experiments. The upper-limit for the direct radiative decay ω → 3γ is 1.9 × 10-4 at 95% confidence level.
|Number of pages||12|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - Oct 16 1997|
ASJC Scopus subject areas
- Nuclear and High Energy Physics