Discussion and solution of the fourth series of exercises.

• Relativistic electron-proton scattering
• Proton charge and magnetic distributions
• Lorentz invariant Rosenbluth elastic electron-proton cross section formula 
• Experimental evidence for finite proton size
• Deep inelastic electron-proton scattering
• DIS kinematical variables and experimental data

Recommended reading: Chapter's 7.1-8.1 of Mark Thomson's book, Chapter's 8.1 - 8.4 of D.Griffith's book.

Discussion and solution of the third series of exercises.

• Covariant form of Maxwell's equations
• Feynman rules in QED
• Electron-muon scattering matrix element
• Casimir's Trick: calculate spin-averaged amplitudes in terms of traces 
• Electron-muon fixed target differential cross section
• Mott scattering cross section formula

Discussion and solution of the second series of exercises.