We report on measurements of mass and total decay width of the W boson and of triple-gauge-boson couplings, γWW and ZWW, with the L3 detector at LEP. W-pair events produced in e+e- interactions between 161GeV and 172GeV centre-of-mass energy are selected in a data sample corresponding to a total luminosity of 21.2 pb-1. The mass and total decay width of the W boson are determined to be Mw = 80.75+0.26 -0.27 (exp.) ± 0.03 (LEP) GeV and Γw = 1.74 +0.88 -0.78 (stat.) ± 0.25 (syst.) GeV, respectively. Limits on anomalous triple-gauge-boson couplings, γWW and ZWW, are determined, in particular - 1.5 < δz < 1.9 (95% CL), excluding vanishing ZWW coupling at more than 95% confidence level.
|Original language||English (US)|
|Number of pages||15|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Nov 6 1997|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics