CERN Accelerating science

Article
Report number CERN-PH-EP-2004-012
Title Measurement of W-pair production in e+e collisions at centre-of-mass energies from 183 to 209 GeV
Author(s) ALEPH Collaboration  ყველა 280 ავტორის ჩვენება
Affiliation (CERN)
Publication 2004
Imprint 6 Apr 2004
Number of pages 27
Series (ALEPH Papers)
Note revised version submitted on 2004-10-20 12:28:00
In: Eur. Phys. J. C 38 (2004) 147-160
DOI 10.1140/epjc/s2004-02048-3
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; ALEPH
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--> hadrons) = (67.13+- 0.37(stat) +- 0.15(syst))%, from which the CKM matrix element |Vcs| is determined to be 0.958 +- 0.017(stat) +- 0.008(syst).

Corresponding record in: Inspire
Email contact: Nathalie.Grub@cern.ch


 ჩანაწერი შექმნილია 2004-04-16, ბოლოს შესწორებულია 2018-09-24


სრული ტექსტი:
სრული ტექსტის ჩამოტვირთვაPDF
  • Send to ScienceWise.info