1) W-boson decays to fermion via weak interaction.
Write down formulas for longitudinal and transverse matrix elements.
Show that for unpolarised W decay is isotropic.
What are relations between decay width to different fermionic flavors.
Does the measured and predicted values agree?

2) Could you explain concept of EW unification?
What is the group structure of the Standard Model and interactions.
Write down few master relations between couplings, explain the role
of weak mixing angle.

3) Z-boson decays to fermion via electromagnetic and weak interaction.
Write down formula for the total decay width, explain role of
cV, cA, cR, cL couplings.