Higgs production and background at LEP

We calculate the total cross section for the process at tree level for LEP energies. We take into account the Higgs production subprocess, background processes with two intermediate vector bosons and their interference. A Higgs lighter than 50GeV could be observed at LEP 1. In this case the background can easily be eliminated. For a heavier Higgs we need LEP 200 energies. Here we will get a significant background from doubleZ production.