论文标题
光子+喷气生产的三环螺旋振幅
Three-loop helicity amplitudes for photon+jet production
论文作者
论文摘要
我们提出了三环螺旋幅度，用于与量子染色体动力学中的一个喷射一起生产单个光子，这是一个最终状态，该状态在大型强子撞机上提供标准模型的标准蜡烛。我们在“ T Hooft-Veltman方案（THV）中采用了最近提供的张量投影方法的变体，该方法避免了由于非物理（-2 $ε$） - 外部状态的维度极化而导致的贡献计算。我们获得了以谐波多组载体表示的紧凑分析结果。
We present three-loop helicity amplitudes for the production of a single photon in association with one jet in Quantum Chromodynamics, a final state which provides a standard candle of the Standard Model at the Large Hadron Collider. We employ a recently-proposed variation of the so-called tensor projection method in the 't Hooft-Veltman scheme (tHV) which avoids the computation of contributions due to unphysical (-2$ε$)-dimensional polarisations of the external states. We obtain compact analytic results expressed in terms of harmonic polylogarithms.
