Black D, Harada M, Schechter J. Vector-meson-dominance model for radiative decays involving light scalar mesons.
PHYSICAL REVIEW LETTERS 2002;
88:181603. [PMID:
12005676 DOI:
10.1103/physrevlett.88.181603]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2002] [Revised: 03/11/2002] [Indexed: 05/23/2023]
Abstract
We study a vector-dominance model which predicts quite a large number of currently interesting decay amplitudes of the types S-->gammagamma, V-->Sgamma, and S-->Vgamma, 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)(0)gamma) by including the isospin violating a(0)(0)-f(0) mixing. However, we find that this effect is actually small in our model.
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