Two-loop mixed QCD-EW corrections to neutral current Drell-Yan
Simone Devoto
TL;DR
This paper computes the complex two-loop mixed QCD-EW virtual amplitudes for neutral current Drell-Yan production, advancing towards full NNLO correction calculations with detailed methods and initial automation steps.
Contribution
It introduces the first calculation of two-loop mixed QCD-EW amplitudes for Drell-Yan and discusses the analytical, semi-analytical, and numerical techniques used.
Findings
Evaluation of all relevant two-loop Feynman integrals.
Implementation of infrared singularity subtraction.
Numerical results for finite remainders.
Abstract
We present the mixed QCD-EW two-loop virtual amplitudes for the neutral current Drell-Yan production, one of the bottlenecks for the complete calculation of the NNLO mixed QCD-EW corrections. We present the computational details and the first steps towards their automation. We describe the evaluation of all the relevant two-loop Feynman integrals using analytical and semi-analytical methods, the subtraction of the universal infrared singularities and present the numerical evaluation of the finite remainder.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Accelerators and Free-Electron Lasers · Quantum Chromodynamics and Particle Interactions