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arXiv · hep-ex/9909010

Measurement of Mass and Width of the W Boson at LEP

L3 Collaboration
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Abstract

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 $Γ_{\mathrm{W}}=1.97\pm0.38$ GeV, respectively.

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L3 Collaboration. 1999-09-04. Measurement of Mass and Width of the W Boson at LEP. https://doi.org/10.1016/s0370-2693(99)00348-2

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