Vector-meson-dominance model for radiative decays involving light scalar mesons

被引：81

作者：

Black, D

Harada, M

Schechter, J

机构：

[1] Jefferson Lab, Theory Grp, Newport News, VA 23606 USA

[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[3] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.88.181603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：1816031 / 1816034

页数：4

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