Lectures on QED and QCD

Abstract

The lectures are a practical introduction to perturbative calculations in QED and QCD. I discuss methods of calculation of one- and two-loop diagrams in dimensional regularization, MSbar and on-shell renormalization schemes, decoupling of heavy-particle loops.

Comments: LaTeX2e, 103 pages, 62 figures. The complete paper is also available at http://www-ttp.physik.uni-karlsruhe.de/Preprints/