论文标题
在Bremsstrahlung的光谱中充电不对称并配对生产
Charge asymmetry in the spectra of bremsstrahlung and pair production
论文作者
论文摘要
我们计算出两个过程的光谱的第一个库仑校正：库仑场中的电子bremsstrahlung和电子峰值光生物增生。我们表明，与在天生近似值和高能量极限中获得的结果相反，这两个过程获得的校正与交叉对称性取代无关。发现的校正决定了这些过程中电荷不对称的主要贡献。我们使用基于IBP降低的现代多磁带方法和主积分的微分方程。结果是根据经典的聚集体提出的。我们提供所获得表达式的阈值和高能渐近学，并将其与可用结果进行比较。
We calculate the first Coulomb correction to the spectra of two processes: the electron bremsstrahlung and electron-positron photoproduction in the Coulomb field. We show that, in contrast to the results obtained in the Born approximation and in the high-energy limit, the obtained corrections for these two process are not related by the crossing symmetry substitutions. The found corrections determine the leading contribution to the charge asymmetry in these processes. We use modern multiloop methods based on the IBP reduction and on the differential equations for master integrals. The results are presented in terms of classical polylogarithms. We provide both the threshold and the high-energy asymptotics of the obtained expressions and compare them with available results.
