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Production of single W bosons at LEP and measurement of WWγ gauge coupling parameters

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Natale, Sonia / Pohl, Martin
Published in Physics Letters. B. 2002, vol. 547, no. 3-4, p. 151-163
Abstract Single W boson production in electron–positron collisions is studied with the L3 detector at centre-of-mass energies between 192 GeV and 209 GeV. Events with two acoplanar hadronic jets or a single energetic lepton are selected, and the single W cross section is measured. Combining the results with measurements at lower centre-of-mass energies, the ratio of the measured cross section to the Standard Model expectation is found to be 1.12+0.11−0.10±0.03. From all single W data, the WWγ gauge coupling parameter κγ is measured to be 1.116+0.082−0.086±0.068.
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L3 COLLABORATION. Production of single W bosons at LEP and measurement of WWγ gauge coupling parameters. In: Physics Letters. B, 2002, vol. 547, n° 3-4, p. 151-163. https://archive-ouverte.unige.ch/unige:43055

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Deposited on : 2014-12-11

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