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本文引入一个统一的机制,试图解释J粒子的辐射衰变和G宇称守恒衰变到普通粒子的过程。这就是J先衰变到φn=αφ1+βφ8,然后由φn衰变到普通粒子。结果如下:1.φn≈ω最与实验相符,但给出的Γ(J→ω→ηγ)/Γ(J→ω→πγ)的理论值太小;2.为着定量谐调辐射衰变和二体强子衰变,要求这两类过程的形状因子相差三个数量级。本文从层子模型的图象出发,提出一个计算形状因子的简单模型。计算结果表明,上述形状因子的差别是可以解释的;3.本文还讨论了辐射衰变的另一种机制,并指出存在的问题。A unified mechanism is proposed to explain the radiative decays and G-parity-conserving decays of the J particle into ordinary particles: According to this mechanism the J particle first decays into the intermediate state φn = αφ1+ βφ8, and then φn decays into ordinary particles. The following results are obtained:1. The predictions are in best agreement Math the experiment if φn≈ω, with the exception that the predicted ratio Γ(J →ω→ ηγ)/Γ(J →ω→πγ) is too small. 2. In order to fit both radiative decays and decays into two hadrons, the form factors for these two types of processes must differ by a factor 103. Using the straton model a method for calculating these form factors is given which explains the above difference quite well.3. Another possible mechanism of radiative decays of the J particle is also discussed, and some difficulties are pointed out.
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