ABSTRACT
The electroweak sector of the standard model has four gauge bosons: W+, W−, Z and the photon. In addition, the symmetry breaking mechanism leaves a neutral scalar as a physical state, which is called the Higgs boson. In earlier chapters, we have discussed only processes where these bosons appear as intermediate virtual particles. But they can also occur in the initial or final state of a physical process. In this chapter, we discuss some processes of this kind.
