On extracting the rho-omega mixing amplitude from the pion form-factor

Details On extracting the rho-omega mixing amplitude from the pion form-factor On extracting the rho-omega mixing amplitude from the pion form-factor

1997-07-05

arxiv.org/abs/hep-ph/9707253v1

Nucl.Phys.A629:464c-470c,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, uses espcrc1.sty (provided in uufile). Talk given at the Int. Conf. on Quark Lepton Nuclear Physics, Osaka, May 20 -

Scientific paper

10.1016/S0375-9474(97)00723-9

In this paper we improve and extend a recent analysis which showed that the rho-omega 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 omega_I -> pi pi 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 omega_I -> pi pi and to the value assumed for the mass of the rho^0-meson.

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