Rho-omega Mixing and the Pion Electromagnetic Form-Factor
H. B. O'Connell, B. C. Pearce, A. W. Thomas, A. G. Williams
Abstract
The suggestion of momentum dependence in the amplitude for rho-omega mixing has generated concern over related implications for vector meson dominance and the photon-rho coupling. We discuss two established representations of vector meson dominance and show that one of these is completely consistent with such a coupling. We then apply it to a calculation of the pion electromagnetic form-factor. Our analysis leads to a new value for the on-shell rho-omega mixing amplitude of (-3800 +/- 370) MeV2.
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