arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.13946hep-phhep-th
收藏

三圈量子色动力学中的双光子振幅

Di-photon amplitudes in three-loop Quantum Chromodynamics

Fabrizio Caola, Andreas von Manteuffel, Lorenzo Tancredi

摘要:

研究了量子色动力学中夸克-反夸克湮灭过程中产生一对光子的三圈散射振幅。我们使用适当定义的投影仪,有效地计算所有的螺旋度振幅。我们得到相对紧凑的分析结果,我们写的调和多项式,或者,多个多项式的深度三。这是首次在全QCD中计算三圈四点散射振幅。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑