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Measurement of the mass and the width of the W boson at LEP / L3 Collaboration
The mass and the total decay width of the W boson are measured with the L3 detector at the LEP e+e- collider using W-boson pairs produced in 0.7/fb of data collected at centre-of-mass energies between 161 and 209GeV. Combining semi-leptonic and fully-hadronic final states, the mass and the width of the W boson are determined to be mW = 80.270 +/- 0.046 +/- 0.031 GeV and GW = 2.18 +/- 0.11 +/- 0.09 GeV, where the first uncertainty is statistical and the second systematic..
hep-ex/0511049; CERN-PH-EP-2005-043; CERN-L3-303; CERN-PH-EP-2005-043.- Geneva : CERN, 2006 - 37 p. - Published in : Eur. Phys. J. C 45 (2006) 569-587 Fulltext: arXiv:hep-ex_0511049 - PDF; cer-002580303 - PDF; External link: Preprint

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