Section outline

    • Hadronic resonances. The 3/2+ Δ baryons.
    • Associated production of K – Λ and strangeness discovery. S=-1, -2, -3 baryons
    • Dalitz plot in three-body phase space.  Angular momentum and parity of final states of two or three neutral or charged pions.
    • Pseudo-scalar mesons. Strange mesons K. The theta-tau puzzle. η, η’.
    • Vector bosons: ρ,ω, φ. ρ decay in two charged and neutral pions.
    • Approximate flavor SU(3) symmetry. Group derivation of quark model. Baryonic number. Organization in octets and decuplets.
    • Pointlike nature of quarks in Deep Inelastic Scattering
    • Hadronic production at e+e- colliders. Ratio R of hadronic production to muon pairs. Experimental evidence of quark colour.
    • Discovery of the J/psi (charm) and of its excited states.  [Richter and Ting experiments and the november revolution]
    • Angular distribution of jets and quark spin. Events with tre hadronic jets and evidence of gluon.
    • The third family and the completion of the quark model [Lederman experiment]
    • Quarkonium. Measurement of αs. OZI selection rule. 
    • Concept of running coupling constants for αQED and αs 
    • Feynman diagrams for hadronic processes.