Section outline

    • Simmetries, invariance, conservation laws, symmetry breaking.
    • Discrete symmetries, C,P e T. Statement of CPT theorem.
    • Intrinsic parity of particles (P). Parity of the pion.[Chinowsky and Steinberger experiment(1954) on slow pion capture on deuteron]
    • Intrinsic charge conjugation (C). C for photon and π0.
    • Continuous symmetries and conservation laws. Statement of Noether theorem.
    • Use of group theory and their representation. Angular momentum and composition rules.
    • Isospin. Doublets (nucleon, ud quarks) and triplets (pion). Flavor SU(2) symmetry. G-Parity.
    • Baryons and mesons from ud quarks: n,p,π,Δ,ρ,ω