Avoid PDFs that say "it is trivial to show." You want the ones that walk through the matrix mechanics Lagrangians Modern Context: A good collection will include problems on Neutrino oscillations Dark Matter candidates , not just 1960s-era spark chamber physics. Phenomenology:
Problems and Solutions on Atomic, Nuclear and Particle Physics (Yung-Kuo Lim) particle physics problems and solutions pdf
Do not hoard PDFs. It is tempting to download 50 files and feel productive. But mastery comes from doing, not downloading. Avoid PDFs that say "it is trivial to show
Eγ=135 MeV2=67.5 MeVcap E sub gamma equals the fraction with numerator 135 MeV and denominator 2 end-fraction equals 67.5 MeV 4. Advanced: Center-of-Mass Energy Calculate the center-of-mass energy ( sthe square root of s end-root ) for a collider where a beam of protons ( ) hits another beam of protons ( ) head-on. Solution: For two beams of equal energy colliding head-on with negligible mass (since But mastery comes from doing, not downloading