W and Z pair production at LEP2

被引：0
|
作者：
Sonia Natale
机构：
[1] University of Geneva,
来源：
The European Physical Journal C - Particles and Fields | 2004年 / 33卷
关键词：
Matrix Element; Energy Range; Pair Production; Radiative Correction; Section Measurement;
D O I：
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学科分类号：
摘要：
The measurements of W-pair, WWγ and ZZ cross sections performed by the four experiments at the LEP collider are herein reported. The statistics collected in the period 1996-2000 amounts to about 40000 WW, 400 WWγ and 1000 ZZ events distributed over a large center-of-mass energy range of 161-209 GeV. From the WW cross section measurements, also the W branching fractions in leptons and hadrons are derived with a percent precision: BR(W→ qq) = 67.77 ± 0.18 ± 0.22% and BR(W→ ℓν)=10.74 ± 0.06 ± 0.07%.
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页码：s706 / s708
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