Diphoton Amplitudes in Three-Loop Quantum Chromodynamics
Diphoton Amplitudes in Three-Loop Quantum Chromodynamics
复制标题
三环量子色动力学中的双光子振幅
DOI:
10.1103/physrevlett.126.112004
复制
发表时间:
2021
影响因子:
8.6
通讯作者:
Tancredi, Lorenzo
中科院分区:
文献类型:
--
作者:
Caola, Fabrizio;von Manteuffel, Andreas;Tancredi, Lorenzo
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.