Publication Type
Journal Article
Version
submittedVersion
Publication Date
1-1999
Abstract
The production of W+W− pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 182.7 GeV, corresponding to an integrated luminosity of 57 pb−1 . Cross sections are given for different topologies of W decays into leptons or hadrons. Under Standard Model assumptions for the W-pair production and decay, the W-pair cross section is measured to be 15.57 ± 0.62(stat.) ± 0.29(syst.) pb. Using also the W-pair data samples collected by ALEPH at lower centre-of-mass energies, the decay branching ratio of the W boson into hadrons is measured to be B(W → hadrons) = 68.93± 1.21(stat.) ± 0.51(syst.)%, allowing a determination of the CKM matrix element |Vcs| = 1.043±0.058(stat.)±0.026(syst.). The agreement of the cross sections with the Standard Model prediction allows a limit to be set on the W decay rate to undetectable final states.
Discipline
Databases and Information Systems | Programming Languages and Compilers
Research Areas
Data Science and Engineering
Publication
Physics Letters B
Volume
453
Issue
1-2
First Page
107
Last Page
120
ISSN
0370-2693
Identifier
10.1016/S0370-2693(99)00304-4
Publisher
Elsevier: SCOAP3 / Elsevier
Citation
1
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.