标题： 量子电动力学在超出Sudakov近似下的高能极限 显示英文标题

标题： High-Energy Limit of Quantum Electrodynamics beyond Sudakov Approximation

摘要： 我们研究了在领先对数近似下，量子电动力学中散射振幅在小电子质量展开的领先阶之外的高能行为。 与Sudakov对数不同，质量抑制的双对数辐射修正是由软电子对交换引起的，并导致幂次抑制贡献的增强，这在极高能量下主导了振幅。 还讨论了我们的结果在量子色动力学高能过程分析中的可能应用。 显示英文摘要

摘要： We study the high-energy behavior of the scattering amplitudes in quantum electrodynamics beyond the leading order of the small electron mass expansion in the leading logarithmic approximation. In contrast to the Sudakov logarithms, the mass-suppressed double-logarithmic radiative corrections are induced by a soft electron pair exchange and result in enhancement of the power-suppressed contribution, which dominates the amplitudes at extremely high energies. Possible applications of our result to the analysis of the high-energy processes in quantum chromodynamics is also discussed.