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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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Lenguaje: | eng |
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2001
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Acceso en línea: | https://dx.doi.org/10.1142/S0217751X01006838 http://cds.cern.ch/record/548104 |
_version_ | 1780898449901748224 |
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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 |
record_format | invenio |
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 |