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Search for the Standard Model Higgs boson in e+e− collisions at √s ≈ 192–209 GeV

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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  • OPAL Collaboration
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<mark>Journal publication date</mark>1/02/2001
<mark>Journal</mark>Physics Letters B
Issue number1-2
Volume499
Number of pages15
Pages (from-to)38-52
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A search for the Standard Model Higgs boson has been performed with the OPAL detector at LEP based on the full data sample collected at √s ≈ 192–209 GeV in 1999 and 2000, corresponding to an integrated luminosity of approximately 426 pb−1. The data are examined for their consistency with the background-only hypothesis and various Higgs boson mass hypotheses. A lower bound of 109.7 GeV is obtained on the Higgs boson mass at the 95% confidence level. At higher masses,
the data are consistent with both the background and the signal-plus-background hypotheses.