四圈量子色动力学中的夸克与胶子形状因子
Quark and Gluon Form Factors in Four-Loop QCD.
作者信息
Lee Roman N, von Manteuffel Andreas, Schabinger Robert M, Smirnov Alexander V, Smirnov Vladimir A, Steinhauser Matthias
机构信息
Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia.
Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
出版信息
Phys Rev Lett. 2022 May 27;128(21):212002. doi: 10.1103/PhysRevLett.128.212002.
We compute the photon-quark and Higgs-gluon form factors to four-loop order within massless perturbative quantum chromodynamics. Our results constitute ready-to-use building blocks for N^{4}LO cross sections for Drell-Yan processes and gluon-fusion Higgs boson production at the LHC. We present complete analytic expressions for both form factors and show several of the most complicated master integrals.
我们在无质量微扰量子色动力学中计算了光子 - 夸克和希格斯 - 胶子形状因子至四圈阶次。我们的结果构成了大型强子对撞机上Drell - Yan过程和胶子融合希格斯玻色子产生的N⁴LO截面的现成构建模块。我们给出了两个形状因子的完整解析表达式，并展示了几个最复杂的主积分。
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