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Rho - omega mixing in chiral perturbation theory

Res Urech

hep-pharXiv:hep-ph/9504238

Abstract

In order to calculate the rho - omega mixing we extend the chiral couplings of the low-lying vector mesons in chiral perturbation theory to a lagrangian that contains two vector fields. We determine the momentum dependence of the two-point function and recover an earlier result for the on-shell expression. We discuss the off-shell behaviour of the mixing.

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