Università Roma Tre

Feynman diagrams. Tree-level processes. Discrete symmetry
Feynman diagrams and cross-sections. Bhabha and Compton scattering. Gauge invarian-
ce. Chiral and Majorana representations for the
matrices. Parity, charge comjugation
and time-reversal.
Radiative Corrections
Divergent behavior of an integral. Primitively divergent diagrams. Pauli-Villars regulari-
zation. Coupling, mass and wave-function renormalization in a scalar theory.
QED: Ward identity. Dimensional regularization. Vacuum polarization and Lamb shift.
Running of the coupling constant. Brehmstrahlung, infrared divergencies and their can-
cellation between real and virtual contributions.
Non Abelian Gauge Theories
Yang-Mills lagrangian. QCD. Non Abelian gauge invariance. Running of the strong
coupling.
Weak Interactions: Fermi and IVB theories. W propagator.
Standard Model
Lagrangian. Weak angle. Spontaneous symmetry breaking and Higgs mechanism. Mass
of the intermediate vector bosons. CKM matrix

F. Mandl, G. Shaw: Quantum Field Theory, ed. John Wiley & Sons;
M. Peskin, D. Shroeder: An Introduction to Quantum Field Theory, ed. Frontiers in
Physics