Measurement of W-pair production in e(+)e(-) collisions at centre-of-mass energies from 183 to 209 GeV
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Date
2004-12
Publication Type
Journal Article
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yes
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Abstract
The W + W- production cross section is measured from a data sample corresponding to a total integrated luminosity of 683 pb-1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 183 to 209 GeV. Individual cross sections for the different topologies arising from W decays into leptons or hadrons, as well as the total W-pair cross section are given at eight centre-of-mass energies. The results are found to be in agreement with recently developed Standard Model calculations at the one percent level. The hadronic branching fraction of the W boson is measured to be B(W→qq¯) = 67.13 ± 0.37(stat.) ± 0.15(syst.)%, from which the CKM matrix element |\ensuremathVcs| is determined to be 0.958 ± 0.017(stat.) ± 0.008(syst.)
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published
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Journal / series
Volume
38 (2)
Pages / Article No.
147 - 160
Publisher
Springer