 The neutral weak current formula_42 is

where formula_44 is the fermions' weak isospin.The charged current part of the Lagrangian is given by
where formula_46 contains the Higgs three-point and four-point self interaction terms,

formula_48 contains the Higgs interactions with gauge vector bosons,

formula_50 contains the gauge three-point self interactions,

formula_52 contains the gauge four-point self interactions,

formula_54 contains the Yukawa interactions between the fermions and the Higgs field,

Note the formula_56 factors in the weak couplings