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Measurement of the W+W-γ cross section and direct limits on anomalous quartic gauge boson couplings at LEP

Document type: Articulo

Abstract

The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.8 pby1 . Based on a sample of 42 selected WqWy candidates containing an isolated hard photon, the WqWyg cross section, defined within phase-space cuts, is measured to q y be: s WW s290"80"16 fb, consistent with the Standard Model expectation. Including the process e e anngg, limits g are derived on anomalous contributions to the Standard Model quartic vertices WqWygg and WqWyZg at 95% CL: y0.043 GeVy2-a rL2-0.043 GeVy2 , y0.08 GeVy2-a rL2-0.13 GeVy2 , y0.41 GeVy2-a rL2-0.37 GeVy2

General information

Issue date: 5 de octubre de 2000
Document language: English
Journal: Physics Letters B; vol. 490, no. 3-4
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 187-195
xmlui.dri2xhtml.METS-1.0.item-dc-subject: Física ; L3 detector ; LEP
Subjects: Ciencias Exactas

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Created: 16 de mayo de 2019
Available since: 16 de mayo de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/75095
  • https://doi.org/10.1016/S0370-2693(00)00993-X

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    Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)