Extracting the ϱ-ω mixing amplitude from the pion form-factor
Abstract
We re-examine and extend a recent analysis which showed that the ϱ-ω mixing amplitude cannot be unambiguously extracted from the pion electromagnetic form-factor in a model independent way. In particular, we focus on the argument that the extraction is sensitive to the presence of any intrinsic ωI → ππ coupling. Our extended analysis confirms the original conclusion, with only minor, quantitative differences. The extracted mixing amplitude is shown to be sensitive to both the intrinsic coupling ωI → ππ and to the value assumed for the mass of the ϱ0-meson.
- Publication:
-
Nuclear Physics A
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0375-9474(97)88425-4
- arXiv:
- arXiv:hep-ph/9703248
- Bibcode:
- 1997NuPhA.623..559O
- Keywords:
-
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 11 pages, publication details added to title page