Vector Meson Dominance Model for Radiative Decays Involving Light Scalar Mesons

Details Vector Meson Dominance Model for Radiative Decays Involving Light Scalar Mesons Vector Meson Dominance Model for Radiative Decays Involving Light Scalar Mesons

2002-02-07

arxiv.org/abs/hep-ph/0202069v2

Phys.Rev.Lett.88:181603,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, REVTeX. Table I and paragraph on application of model to study effect of a_0 - f_0 mixing revised

Scientific paper

10.1103/PhysRevLett.88.181603

We study a vector dominance model which predicts a fairly large number of currently interesting decay amplitudes of the types S -> \gamma \gamma, V -> S \gamma and S -> V \gamma, where S and V denote scalar and vector mesons, in terms of three parameters. As an application, the model makes it easy to study in detail a recent proposal to boost the ratio Gamma(phi -> f_0 gamma) / Gamma(phi -> a_0 gamma) by including the isospin violating a_0 - f_0 mixing. However we find that this effect is actually small in our model.

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