Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - W+W− production cross section and W branching fractions in e+e− collisions at 189 GeV
AU - Kartvelishvili, Vakhtang
AU - OPAL Collaboration
PY - 2000/11/16
Y1 - 2000/11/16
N2 - From a data sample of 183 pb−1 recorded at a center-of-mass energy of √s = 189 GeV with the OPAL detector at LEP, 3068 W-pair candidate events are selected. Assuming Standard Model W boson decay branching fractions, the W-pair production cross section is measured to be σWW = 16.30 ± 0.34(stat.) ± 0.18(syst.) pb. When combined with previous OPAL measurements, the W boson branching fraction to hadrons is determined to be 68.32 ± 0.61(stat.) ± 0.28(syst.)% assuminglepton universality. These results are consistent with Standard Model expectations.
AB - From a data sample of 183 pb−1 recorded at a center-of-mass energy of √s = 189 GeV with the OPAL detector at LEP, 3068 W-pair candidate events are selected. Assuming Standard Model W boson decay branching fractions, the W-pair production cross section is measured to be σWW = 16.30 ± 0.34(stat.) ± 0.18(syst.) pb. When combined with previous OPAL measurements, the W boson branching fraction to hadrons is determined to be 68.32 ± 0.61(stat.) ± 0.28(syst.)% assuminglepton universality. These results are consistent with Standard Model expectations.
U2 - 10.1016/S0370-2693(00)01085-6
DO - 10.1016/S0370-2693(00)01085-6
M3 - Journal article
VL - 249-265
SP - 249
EP - 265
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 17
ER -