Diphoton Amplitudes in Three-Loop Quantum Chromodynamics

Diphoton Amplitudes in Three-Loop Quantum Chromodynamics
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三环量子色动力学中的双光子振幅

DOI:
10.1103/physrevlett.126.112004
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发表时间:
2021
影响因子:
8.6
通讯作者:
Tancredi, Lorenzo
Tancredi, Lorenzo
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Caola, Fabrizio;von Manteuffel, Andreas;Tancredi, Lorenzo

文献摘要

相似文献

我们考虑了QCD中夸克-反夸克湮灭中产生一对光子的三环散射振幅。我们使用适当定义的投影来有效地计算所有的螺旋振幅。我们得到了相对紧凑的解析结果,我们用调和多对数的形式来写,或者,也可以用深度为3的多重多对数来写。这是在全QCD中首次计算三回四点散射振幅。
We consider the three-loop scattering amplitudes for the production of a pair of photons in quark-antiquark annihilation in 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.