Searches for Standard Model Higgs Boson at Lep

The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have collected 2465 pb^-1 of e⁺e^- collision data at energies between 189 GeV and the highest energy of 209 GeV. Searches for the Standard Model Higgs boson have been performed by each of the LEP collaborations. A lower bound of 114.1 GeV has been obtained at the 95% confidence level for the mass of the Higgs boson. The likelihood analysis shows a preference for a Higgs boson with a mass of 115.6 GeV.