Preprint

PUBDB-2021-02152

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Calculating Four-Loop Corrections in QCD

Moch, S.-O. (Corresponding author)Extern* ; Magerya, V. (Corresponding author)Extern*

2021

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Please use a persistent id in citations: doi:10.3204/PUBDB-2021-02152

Report No.: DESY-21-047; KA-TP-05-2021; arXiv:2104.07994

Abstract: We review the current status of perturbative corrections in QCD at four loops for scattering processes with space- and time-like kinematics at colliders, with specific focus on deep-inelastic scattering and electron-positron annihilation. The calculations build on the parametric reduction of loop and phase space integrals up to four-loop order using computer algebra programs such as FORM, designed for large scale computations.

Keyword(s): electron positron: annihilation ; perturbation theory: correction ; computer: algebra ; quantum chromodynamics ; deep inelastic scattering ; phase space ; scattering ; kinematics ; parametric

Note: 13 pages LaTeX, 2 figures; based on the talk given by S.Moch at the DESY workshop 'Antidifferentiation and the Calculation of Feynman Amplitudes', Zeuthen, Oct 04-09, 2020

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Contributing Institute(s):

1. Uni Hamburg / Theorie (UNI/TH)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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