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Measurement of the W pair cross-section in e+ e- collisions at 172-GeV

Barate, R. and Finch, Alexander (1997) Measurement of the W pair cross-section in e+ e- collisions at 172-GeV. Physics Letters B, 415 (4). pp. 435-444. ISSN 0370-2693

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Abstract

The e+e−→W+W− cross section is measured in a data sample collected by ALEPH at a mean centre-of-mass energy of 172.09 GeV, corresponding to an integrated luminosity of 10.65 pb−1. Cross sections are given for the three topologies, fully leptonic, semi-leptonic and hadronic of a W-pair decay. Under the assumption that no other decay modes are present, the W-pair cross section is measured to be The existence of the triple gauge boson vertex of the Standard Model is clearly preferred by the data. The decay branching ratio of the W boson into hadrons is measured to be , allowing a determination of the CKM matrix element |Vcs|=0.98±0.14(stat.)±0.03(syst.).

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 64006
Deposited By: ep_importer_pure
Deposited On: 14 May 2013 15:49
Refereed?: Yes
Published?: Published
Last Modified: 20 Nov 2017 11:05
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/64006

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