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Paper detail

Perturbative QCD

We give an introduction to perturbative Quantum Chromodynamics, focusing on a pedagogical description of concepts and methods to calculate cross sections measured at high energy colliders. After introducing basic concepts that allow for a perturbative expansion, such as factorisation and asymptotic freedom, we introduce loop integrals and the treatment of ultraviolet and infrared divergences in QCD. The definition of jets and event shape observables is also discussed. Finally, we give a brief overview of the current state of the art.

preprint2025arXivOpen access
Gudrun HeinrichAnton Olsson
hep-ph
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Gudrun HeinrichAnton Olsson

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