5 Electroweak theory

We can now start discussing the standard model. In this chapter, we will account

for everything in the theory apart from the strong force. In particular, we will

talk about the gauge (electroweak) and Higgs part of the theory, as well as the

matter content.

The description of the theory will be entirely in the classical world. It is only

when we do computations that we quantize the theory and compute

S

-matrices.