粲偶素衰变过程中ρπ疑难的研究

Study of theρπPuzzle in Charmonium Decays

详细回顾并广泛评论了粲偶素衰变过程中有关ρπ疑难的各种理论解释和探讨．在可能的情况下,将有关的理论预言与相应的实验数据进行了细致的比较．描述并讨论了三种估算(?)′和J/(?)衰变分支比比值的方法．针对目前的现状,指出为了深入理解ρπ疑难以及更进一步了解粲偶素衰变的动力学机制,需要从理论探究、唯象分析和实验测量多方面进行系统、深入和全面的工作．

The theoretical explanations about the ＂ρπ puzzle＂ in charmonium decays are reviewed extensively, and the comparison of theoretical predications with experimental data is made whenever possible. Three methods to estimate the ratio of the branching fractions of J/ψ and ψ＇ decays are also discussed. It is pointed out that in order to understand the ρπ puzzle, and the dynamics of charmonium decays, systematic studies should be made in theory, phenomenology and experiment aspects.