Measurement of Mw from LEP2

Details Measurement of Mw from LEP2 Measurement of Mw from LEP2

1998-05-20

arxiv.org/abs/hep-ex/9805020v2

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures; uses Moriond.sty; to appear in the proceedings of the XXXIIIrd Recontres de Moriond, March 1998. Text unch

Scientific paper

In 1997 each LEP experiment collected approximately 55 inv. pb of data at a center-of-mass energy of 183 GeV. These data yield a sample of candidate e+e- -> WW events from which the mass of the W boson, Mw, is measured. The LEP combined result, including data taken at roots = 161 and 172 GeV and assuming the Standard Model relation between the W decay width and mass, is Mw = 80.35 +/- 0.07 (exp) +/- 0.04 (CR) +/- 0.03 (E_beam) GeV, where the errors correspond to experimental, colour-reconnection/Bose-Einstein, and LEP beam energy uncertainties respectively.

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