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WW cross sections and W branching fractions in L3

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,...

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Autor principal: Malgeri, L
Lenguaje:eng
Publicado: 2001
Materias:
Acceso en línea:https://dx.doi.org/10.1142/S0217751X01006838
http://cds.cern.ch/record/548104
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author Malgeri, L
author_facet Malgeri, L
author_sort Malgeri, L
collection CERN
description 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 leptom and hadrons are derived with a percent precision: BR(W to qq) = 68.47 +or- 0.49 +or- 0.33% and BR(W to lv) = 10.51 +or- 0.16 +or- 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. (10 refs).
id cern-548104
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-5481042019-09-30T06:29:59Zdoi:10.1142/S0217751X01006838http://cds.cern.ch/record/548104engMalgeri, LWW cross sections and W branching fractions in L3Particle Physics - ExperimentThe 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 leptom and hadrons are derived with a percent precision: BR(W to qq) = 68.47 +or- 0.49 +or- 0.33% and BR(W to lv) = 10.51 +or- 0.16 +or- 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. (10 refs).oai:cds.cern.ch:5481042001
spellingShingle Particle Physics - Experiment
Malgeri, L
WW cross sections and W branching fractions in L3
title WW cross sections and W branching fractions in L3
title_full WW cross sections and W branching fractions in L3
title_fullStr WW cross sections and W branching fractions in L3
title_full_unstemmed WW cross sections and W branching fractions in L3
title_short WW cross sections and W branching fractions in L3
title_sort ww cross sections and w branching fractions in l3
topic Particle Physics - Experiment
url https://dx.doi.org/10.1142/S0217751X01006838
http://cds.cern.ch/record/548104
work_keys_str_mv AT malgeril wwcrosssectionsandwbranchingfractionsinl3