Measurement of Mass and Width of the W Boson at LEP

Details Measurement of Mass and Width of the W Boson at LEP Measurement of Mass and Width of the W Boson at LEP

1999-09-04

arxiv.org/abs/hep-ex/9909010v1

Phys.Lett.B454:386-398,1999

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1016/S0370-2693(99)00348-2

We report on measurements of the mass and total decay width of the W boson with the L3 detector at LEP. W-pair events produced in $\mathrm{e^+e^-}$ interactions between 161 GeV and 183 GeV centre-of-mass energy are selected in a data sample corresponding to a total luminosity of 76.7 pb$^{-1}$. Combining all final states in W-pair production, the mass and total decay width of the W boson are determined to be $\mathrm{M_W}=80.61\pm0.15$ GeV and $\Gamma_{\mathrm{W}}=1.97\pm0.38$ GeV, respectively.

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