Constraints on the momentum dependence of rho-omega mixing
H. B. O'Connell, B. C. Pearce, A. W. Thomas, A. G. Williams
Abstract
Within a broad class of models we show that the amplitude for rho0-omega mixing must vanish at the transition from timelike to spacelike four momentum. Hence in such models the mixing is either zero everywhere or is necessarily momentum-dependent. This lends support to the conclusions of other studies of rho-omega mixing and calls into question standard assumptions about the role of rho-omega mixing in the theoretical understanding of charge-symmetry breaking in nuclear systems.
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