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

L3 Collaboration

doi:10.1016/j.physletb.2004.08.060

Scientific article

English

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

Contributors

L3 Collaboration

Collaborators

Achard, Pablo; Bourquin, Maurice; Braccini, Saverio; Chamizo Llatas, Maria; Deglon, Patrick; Delmeire, Evelyne; Echenard, Bertrand; Extermann, Pierre; Field, John; Kienzle, Maria-Novella; Natale, Sonia; Pohl, Martin; Straessner, Arno

Published in

Physics letters. B, vol. 600, no. 1-2, p. 22-40

Publication date

2004

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.)%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.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

L3 Collaboration. Measurement of the cross section of W-boson pair production at LEP. In: Physics letters. B, 2004, vol. 600, n° 1-2, p. 22–40. doi: 10.1016/j.physletb.2004.08.060

Article (Published version)

Identifiers

PID : unige:42273
DOI : 10.1016/j.physletb.2004.08.060

Additional URL for this publication

http://www.sciencedirect.com/science/article/pii/S0370269304012493

Journal ISSN

0370-2693

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Creation

28/11/2014 09:15:00

First validation

28/11/2014 09:15:00

Update

13/10/2025 22:12:05

Status update

14/03/2023 22:18:38

Last indexation

10/11/2026 17:12:31

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

Contributors

Collaborators

Published in

Publication date

Abstract

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation