MODERN METHODS IN PERTURBATIVE QCD

• HELICITY TREE AMPLITUDES
• MAXIMAL HELICITY VIOLATING (MHV) AMPLITUDES
• BCF REDUCTION
• EFFECTIVE FIELD THEORY
• COLOUR FACTORS
• VELTMAN-PASSARINO REDUCTION OF LOOP DIAGRAMS
• REDUCTION OF POLYGON LOOP DIAGRAMS
• SUPERSYMMETRIC THEORIES
• CUT CONSTRUCTION
• BEYOND CUT CONSTRUCTIBILITY