论文标题
$ j/ψ$梅森的习惯
Hadronic decays of the $J/ψ$ meson
论文作者
论文摘要
在这项工作中，我们提出的主要是现象学和理论模型，允许使用可用的实验数据，计算形式因素（FFS）和衰减幅度。我们首先将注意力集中在$ j/ψ$衰减上，这表明由于存在不可忽略的混合强em贡献对总分支比率的不可忽略的混合强大贡献，因此该过程并不像迄今为止所相信的那样进行电磁。此外，我们将$ j/ψ$梅森的衰变纳入一对巴属 - 抗亚伯里，我们首次将单一的强，电磁和强EM对总BR和相对Feynman振幅贡献，也获得了强度和电子电磁之间的相对相之间的相对相。
In this work we propose mainly phenomenological and theoretical models that allow, together with the use of the available experimental data, the calculation of form factors (FFs) and decay amplitudes. We focus our attention firstly on the $J/ψ$ decay into a pair of pions, showing that this process does not proceed only electromagnetically as believed so far, due to the presence of a non-negligible mixed strong-EM contribution to the total branching ratio. Moreover we consider the decay of the $J/ψ$ meson into a pair of baryon-antibaryon, where we separate, for the first time, the single strong, electromagnetic and strong-EM contributions to the total BR and the relative Feynman amplitudes, obtaining also the relative phase between the strong and the electromagnetic ones.
