Production of single bosons at = 189-GeV and measurement of gauge couplings
Collaboration
17 pages
Published in:
- Phys.Lett.B 487 (2000) 229-240
e-Print:
- hep-ex/0007005 [hep-ex]
Report number:
- CERN-EP-2000-066
Experiments:
Citations per year
Abstract: (Elsevier)
Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of s =188.7 GeV corresponds to an integrated luminosity of 176.4 pb −1 . Events with a single energetic lepton or two acoplanar hadronic jets are selected. Within phase-space cuts, the total cross-section is measured to be 0.53±0.12±0.03 pb , consistent with the Standard Model expectation. Including our single W boson results obtained at lower s , the WW γ gauge couplings κ γ and λ γ are determined to be κ γ =0.93±0.16±0.09 and λ γ =−0.31 +0.68 −0.19 ±0.13.- electron positron: colliding beams
- electron positron: annihilation
- W: electroproduction
- W: hadronic decay
- W: leptonic decay
- channel cross section: energy dependence
- electroweak interaction: validity test
- coupling: (2W photon)
- final state: (2jet)
- lepton: final state
References(46)
Figures(8)