论文标题
QCD中夸克 - 格鲁恩散射的三环螺旋振幅
Three-loop helicity amplitudes for quark-gluon scattering in QCD
论文作者
论文摘要
我们在无质量的qCD中计算$ q \ bar {q} \及其交叉的党频道的三环螺旋振幅。我们的分析结果提供了对不同颜色表示的外部状态的红外杆的颜色四极贡献的非平凡检查。在高能的情况下，$ qg \ to qg $振幅显示了Regge理论中的预测分解形式，并证实了从$ qq'\ to qq'$和$ gg \ gg \ to GG $散射提取的Gluon regge轨迹的先前结果。
We compute the three-loop helicity amplitudes for $q\bar{q} \to gg$ and its crossed partonic channels, in massless QCD. Our analytical results provide a non-trivial check of the color quadrupole contribution to the infrared poles for external states in different color representations. At high energies, the $qg \to qg$ amplitude shows the predicted factorized form from Regge theory and confirms previous results for the gluon Regge trajectory extracted from $qq' \to qq'$ and $gg \to gg$ scattering.
