标题： 轻核的电子散射截面在统一的弱电理论中 显示英文标题

标题： Electron scattering cross section for light nuclei within the unified electroweak theory

摘要： 我们利用统一的电弱理论中的多极展开，发展了一种完整的轻核电子散射截面计算方法。 对6,7Li和7Be核的具体计算表明，当入射电子能量不超过核子质量两倍时，传统的冲量近似才能应用于电子-核子散射。 此外，7Li从基态到最近激发态的准弹性散射截面以及基态的弹性散射截面被分别处理，而实验中尚未分别测量这些截面。 获得的散射截面在适当调整谐振子参数并与V-A结构结合时，能合理地解释兆电子伏特能量范围内的现有实验数据，并提供了吉电子伏特能量范围内的预测信息。 这为通过高能（吉电子伏特）电子或轻子散射研究核结构和弱相互作用提供了新的视角，考虑的是核子而非夸克。 显示英文摘要

摘要： We employ the multipole expansion within the unified electroweak theory to develop a complete calculation method of the electron scattering cross section for light nuclei. The specific calculations for 6,7Li and 7Be nuclei indicate that the conventional impulse approximation can be applied to the electron-nucleus scattering only when the incident electron energy does not exceed twice the nucleon mass. In addition, the quasi-elastic scattering cross section of 7Li in the excitation from its ground state to the nearest excited state and that of elastic scattering in the ground state are independently treated, whereas they have not been separately measured in experiments. The obtained scattering cross sections corresponding to an appropriate adjustment of the harmonic oscillator parameter along with the V-A structure interpret reasonably well the available experimental data at MeV energies and provide predictive information at GeV energies. This gives new perspectives in studying the structure of nuclei and the weak interactions via electron or lepton scattering at high (GeV) energies, considering nuclei rather than quarks.