Section outline

    • Charged and neutral current interactions. Muon decay. Fermi constant and 4-fermion process.
    • Neutron beta decay. Pion decay and helicity suppression.
    • Neutrinos and conservation of leptonic flavor. Dirac and Majorana neutrino. Neutrinoless double beta decay [Experiment on muon neutrino flavor]
    • Limits on neutrino masses. [Measurement with tritium]
    • Parity violation in weak interactions. [Wu experiment]
    • Helicity and chirality. V-A weak currents. Pion decay.
    • Helicity of the neutrino.  [Goldhaber experiment]
    • Weak charged currents in quarks and the Cabibbo angle.
    • Charm and GIM mechanism. Absence of Flavor Changing Neutral Currents (FCNC)
    • CKM matrix and quark mixing. Particle-antiparticle conjugation violation (CP)
    • Feynman diagrams for weak processes.