# Measurements of Mass, Width and Gauge Couplings of the W Boson at LEP

3 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : We report on measurements of mass and total decay width of the W boson and of triple-gauge-boson couplings, $\gamma$WW and ZWW, with the L3 detector at LEP. W-pair events produced in $\EE$ interactions between $161\GeV$ and $172\GeV$ 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 $\MW=80.75^{+0.26}_{-0.27}~(exp.)\pm0.03~(\mat hrm{LEP})\GeV$ and $\GW=1.74^{+0.88}_{-0.78}~(stat.)\pm0.25~(syst.)\Ge V$, respectively. Limits on anomalous triple-gauge-boson couplings, $\gamma$WW and ZWW, are determined, in particular $-1.5 \dZ 1.9$ (95\% CL), excluding vanishing ZWW coupling at more than 95\% confidence level.
Document type :
Journal articles

Cited literature [34 references]

http://hal.in2p3.fr/in2p3-00023163
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Submitted on : Monday, November 16, 1998 - 11:34:19 AM
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### Citation

M. Acciarri, O. Adriani, M. Aguilar-Benitez, S. Ahlen, J. Alcaraz, et al.. Measurements of Mass, Width and Gauge Couplings of the W Boson at LEP. Physics Letters B, Elsevier, 1997, 413, pp.176-190. ⟨10.1016/S0370-2693(97)01082-4⟩. ⟨in2p3-00023163⟩

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