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Author: Thomas Greening (University of Wisconsin - Madison)

Title: Search for the Standard Model Higgs Boson at LEP

Abstract: Preliminary results from the four LEP experiments using data collected at189 GeV have shown no evidence for the Standard Model Higgs boson. Thepreliminary 95% confidence level lower limits on the SM Higgs boson massfrom ALEPH, DELPHI, OPAL, and L3 are 90.4 GeV, 94.1 GeV, 95.5 GeV, and 95.2GeV, respectively. When LEP finishes in the year 2000, each experimentexpects to collect 200 pb-1 of data at 200 GeV. These data will allow thediscovery of the SM Higgs boson with a mass lower than about 105 GeV.Assuming that no new evidence for the SM Higgs boson is found, the massexclusion limit would be approximately 110 GeV.

Comments: 5 pages with 4 figuresSubmitted to UCLS/DPF 99 Conference ProceedingsReport-no: DPF99-1-14

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