The influence of quantum electrodynamic (QED) effects on the Sherman function S for the scattering of polarized electrons from a \(^{12}\)C nucleus is investigated. While vacuum polarization is treated to all orders via the Uehling potential, the vertex correction, self energy, soft bremsstrahlung and dispersion corrections are accounted for to lowest order within the plane-wave Born approximation. The latter are estimated with the help of a closure approximation. The additional emission of hard bremsstrahlung is calculated by means of the Sommerfeld–Maue theory. Photons up to 4 MeV are included, corresponding to the detector resolution in future experiments. In the collision energy regime considered, 20–180 MeV, the combined QED effects lead to considerable changes in S, amounting to 5–40% at the larger scattering angles.

研究了量子电动力学（QED）效应对谢尔曼函数S的影响，该谢尔曼函数S用于极化电子从\（^ {12} \） C核的散射。通过Uehling势将真空极化处理到所有阶数时，在波面波恩近似中，顶点校正，自能量，软致辐射和色散校正被认为是最低阶的。后者借助闭合近似来估计。通过Sommerfeld-Maue理论计算出硬致辐射的额外排放量。包含高达4 MeV的光子，对应于未来实验中的探测器分辨率。在20–180 MeV的碰撞能量范围内，结合的QED效应导致S的显着变化，在较大的散射角时为5–40％。