Search for the Standard Model Higgs boson in e+e− collisions at √s ≈ 192–209 GeV
2001
Abstract A search for the Standard Model
Higgs bosonhas 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 bosonmass hypotheses. A lower bound of 109.7 GeV is obtained on the
Higgs bosonmass at the 95% confidence level. At higher masses, the data are consistent with both the background and the signal-plus-background hypotheses.
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