Leptonic probes do not suffer from this handicap . 轻子探针不会遇到这一困难。
2.
We obtain a new quark potential from the effective dilaton - gluon - coupling inspired by superstring theory , and by using this static potential , we explore the mechanism of quark confinement through calculations of the spin - average energy levels , the widths of the leptonic decays and radiative transitions for heavy quarkonium . the obtained results are compared with that of the cornell potenial 由规范场理论的超弦理论所激发的伸缩子一胶子有效藕合,给出了一个新的静态夸克一反夸克势,讨论了此势模型下重介子的自旋平均能谱、轻子衰变和辐射跃迁宽度,并与cdrn叭势模型所得到的相应结果作了比较