标题： 手征微扰理论与矢量介子主导在衰变$φ\to ργγ$和$φ\to ωγγ$中的比较 显示英文标题

标题： Chiral perturbation theory vs. vector meson dominance in the decays $φ\to ργγ$ and $φ\to ωγγ$

摘要： 指出一个$\phi$介子、$\phirho$和$\phiom$的辐射衰变主要来自赝标（$P = \eta, \eta^{'}$）交换的贡献。使用矢量介子主导模型，我们发现$B (\phirho) \approx 1.3 \times 10^{-4}$和$B (\phiom) \approx 1.5 \times 10^{-5}$主要来自$\eta^{'}$极点。 因此，这些衰变都在$\phi$工厂的探测范围内。 我们的估计比重矢量介子手征拉格朗日量中的手征环贡献大几个数量级，大约是 ( 几个 )$\times 10^{-9}$。 显示英文摘要

摘要： It is pointed out that the radiative decays of a $\phi$ meson, $\phirho$ and $\phiom$, receive dominant contributions from the pseudoscalar ($P = \eta, \eta^{'}$) exchanges. Using the vector meson dominance model, we find that $B (\phirho) \approx 1.3 \times 10^{-4}$ and $B (\phiom) \approx 1.5 \times 10^{-5}$, which are mainly from the $\eta^{'}$ pole. Thus, these decays are well within the reach of the $\phi$ factory. Our estimates are a few orders of magnitude larger than the chiral loop contributions in the heavy vector meson chiral lagrangian, which is about ( a few ) $\times 10^{-9}$.