论文标题
混合EW-QCD双环振幅$ q \ bar {q} \ to \ ell^+\ ell^ - $ and $γ_5$ proge of Multi-Loop Corrections的方案独立性
Mixed EW-QCD two-loop amplitudes for $q\bar{q} \to \ell^+\ell^-$ and $γ_5$ scheme independence of multi-loop corrections
论文作者
论文摘要
我们对$ q \ bar {q} $进行专门研究，启动了两环electroweak-qcd drell-yan散射幅度，用于消失的光夸克和轻顿质量。对于相对顺序$α$和$α_s$一环标准模型校正，我们与原始文献进行了比较的详细信息。 The infrared pole terms of the mixed two-loop amplitude are governed by a known generalization of the dipole formula and we show explicitly that exactly the same two-loop polarized hard scattering functions are obtained in both the standard 't Hooft-Veltman-Breitenlohner-Maison $γ_5$ scheme and Kreimer's anticommuting $γ_5$ scheme.
We perform a dedicated study of the $q \bar{q}$-initiated two-loop electroweak-QCD Drell-Yan scattering amplitude in dimensional regularization schemes for vanishing light quark and lepton masses. For the relative order $α$ and $α_s$ one-loop Standard Model corrections, details of our comparison to the original literature are given. The infrared pole terms of the mixed two-loop amplitude are governed by a known generalization of the dipole formula and we show explicitly that exactly the same two-loop polarized hard scattering functions are obtained in both the standard 't Hooft-Veltman-Breitenlohner-Maison $γ_5$ scheme and Kreimer's anticommuting $γ_5$ scheme.
