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Measurement of the cross section of W-boson pair production at LEP

Document type: Articulo

Abstract

The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4 pb−1, collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadrons or leptons are selected. The total cross section is measured with a precision of 1.4% and agrees with the Standard Model expectation. Assuming charged-lepton universality, the branching fraction for hadronic W-boson decays is measured to be: Br(W → hadrons) = 67.50 ± 0.42(stat.) ± 0.30(syst.)%, in agreement with the Standard Model. Differential cross sections as a function of the W-production angle are also measured for the semi-leptonic channels qqeν and qqμν.

General information

Issue date: 21 de octubre de 2004
Document language: English
Journal: Physics Letters B; vol. 600, no. 1-2
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 22-40
xmlui.dri2xhtml.METS-1.0.item-dc-subject: W-boson ; large electron positron collider ; L3 detector
Subjects: Ciencias Exactas ; Física

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Created: 28 de agosto de 2019
Available since: 28 de agosto de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/79970
  • https://doi.org/10.1016/j.physletb.2004.08.060

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    Creative Commons Attribution 3.0 Unported (CC BY 3.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 3.0 Unported (CC BY 3.0)