Scientific article
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English

Production of single W bosons at √s=189 GeV and measurement of WWγ gauge couplings

ContributorsL3 Collaboration
Published inPhysics letters. B, vol. 487, no. 3-4, p. 229-240
Publication date2000
Abstract

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 053±0.12±0.03 pb, consistent with the Standard Model expectation. Including our single W boson results obtained at lower √s, the WWγ gauge couplings κγ and λγ are determined to be κγ=0.93±0.16±0.09 and λγ=−0.31+0.68−0.19±0.13.

Citation (ISO format)
L3 Collaboration. Production of single W bosons at √s=189 GeV and measurement of WWγ gauge couplings. In: Physics letters. B, 2000, vol. 487, n° 3-4, p. 229–240. doi: 10.1016/S0370-2693(00)00824-8
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Journal ISSN0370-2693
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