ABSTRACT
The origin of electroweak symmetry breaking and hence the Higgs mechanism is a fundamental question that has not been answered yet. Since the beginning of LEP in 1989 and up to its final shutdown in the year 2000, with special emphasis during the last years of running in which LEP raised its energy, the search for Higgs bosons has been of great interest. Due to minor model dependence in the phenomenology of the Higgs bosons, several theoretical models have been explored at LEP with only a few number of searches. On top of the searches for the SM Higgs boson, the results encompass neutral and charged Higgs bosons in general Two Higgs Doublet Models (2HDM) as well as the searches for doubly charged Higgs bosons and for new neutral scalar bosons. In order to increase the sensitivity of the searches, the results of the four LEP experiments (ALEPH, DELPHI, L3 and OPAL), are combined in several channels, whenever possible. Details of the luminosity recorded by the four experiments per year are given in Table 1.
