Perturbative Quantum Chromodynamics (QCD) studies the strong interaction at high energies where the coupling becomes weak. In this regime, calculations can be performed using perturbation theory. Perturbative QCD successfully describes processes such as jet production and deep inelastic scattering. It explains asymptotic freedom, where quarks interact weakly at short distances. This approach is essential for interpreting collider experiments and testing the Standard Model. Perturbative QCD provides precise predictions for high-energy particle collisions. Its methods rely on Feynman diagrams and renormalization techniques. Despite limitations at low energies, perturbative QCD is a powerful tool for understanding strong interactions in high-energy physics.
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