We study a vector dominance model which predicts a fairly large number of currently interesting decay amplitudes of the types S -> , V -> S and S -> V, where S and V denote scalar and vector mesons, in terms of three parameters. As an application we first use our approach to obtain the usual puzzling result ( ->f₀)/( -> a 1 rather than the observed value of about 3. The model makes it easy to test in detail a recent proposal to solve this puzzle by including the isospin violating a-f₀ mixing and we find that it seems successful.

Authors: Deirdre Black, Masayasu Harada, Joseph Schechter

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