Quantum Chromodynamics

Details Quantum Chromodynamics Quantum Chromodynamics

2006-04-19

arxiv.org/abs/hep-ph/0604165v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

48 pages, 28 figures. Lectures given at the 2005 European School of High-Energy Physics, Kitzbuehel, Austria, Aug. 21 - Sept.

Scientific paper

After a brief historical review of the emergence of QCD as the quantum field theory of strong interactions, the basic notions of colour and gauge invariance are introduced leading to the QCD Lagrangian. The second lecture is devoted to perturbative QCD, from tree-level processes to higher-order corrections in renormalized perturbation theory, including jet production in e+ e- annihilation, hadronic tau decays and deep inelastic scattering. The final two lectures treat various aspects of QCD beyond perturbation theory. The main theme is effective field theories, from heavy quarks to the light quark sector where the spontaneously broken chiral symmetry of QCD plays a crucial role.

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