Abstract
The measurements of W-pair cross sections performed by the L3 experiment at the LEP collider are herein reported. The statistics collected in the period 1996-2000 amounts to more than 8000 events distributed over a large center-of-mass energy range: 161–208 GeV. From the cross section measurements, also the W branching fractions in leptons and hadrons are derived with a percent precision: BR ( W → qq) = 68.47 ± 0.49 ± 0.33% and BR ( W → ℓν) = 10.51 ± 0.16 ± 0.11%. The improving statistical accuracy of the measurements is now approaching the systematic uncertainties. Further studies, necessary also for the W mass determination, will be needed in the near future to keep them under control.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
