论文标题
三环量子染色体动力学中的di-photon振幅
Di-photon amplitudes in three-loop Quantum Chromodynamics
论文作者
论文摘要
我们考虑在Quark-Antiquark an灭量子铬动力学（QCD）中生产一对光子的三环散射幅度。我们使用适当定义的投影仪有效计算所有螺旋性振幅。我们获得了相对紧凑的分析结果，这些结果是根据谐波多组载体或深度三的多个多组载体编写的。这是完整QCD中三环散射幅度的第一个计算。
We consider the three-loop scattering amplitudes for the production of a pair of photons in quark-antiquark annihilation in Quantum Chromodynamics (QCD). We use suitably defined projectors to efficiently calculate all helicity amplitudes. We obtain relatively compact analytic results, that we write in terms of harmonic polylogarithms or, alternatively, multiple polylogarithms of up to depth three. This is the first calculation of a three-loop four-point scattering amplitude in full QCD.
