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

A. G. Williams·H. B. O'Connell·A. W. Thomas
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Abstract

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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A. G. Williams, H. B. O'Connell, A. W. Thomas. 1997-07-05. On extracting the rho-omega mixing amplitude from the pion form-factor. https://doi.org/10.1016/s0375-9474(97)00723-9

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