After the spontaneous symmetry breaking, we have electron and its neutrino, a new charged heavy lepton and its neutrino, two neutral heavy leptons.
自发破缺的结果除电子和电子中微子外，还出现新的中微子以及一个带电的和两个中性重轻子。
Using a potential model with relativistic correction we evaluated the spectrum, lepton decay widths and radiative transition widths of heavy quarkonium systems.
本文用考虑了相对论修正的势模型计算重夸克偶素的能谱、轻子宽度和辐射跃迁宽度。
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