Acciarri, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (1998) Measurement of W-pair cross sections in e+e- interactions at √s= 183 GeV and W-decay branching fractions Physics Letters B, 436 (3-4). pp. 437-452. ISSN 0370-2693
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0370-2693(98)01173-3
Abstract
We report on the measurement of W-boson pair-production with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 55.47 pb-1 collected at an average centre-of-mass energy of 182.68 GeV, we select 824 four-fermion events with pairs of hadronic jets or pairs of leptons with high invariant masses. Branching fractions of W decays into different fermion-antifermion pairs are determined. Assuming charged-current lepton universality, the branching fraction for hadronic W decays is measured to be: B(W → hadrons) = 70.1 ± 1.3(stat.) ± 0.4 (syst.) %. Combining all final states the total cross section for W-pair production is measured to be: σWW= 16.53±0.67(stat.)±0.26(syst.) pb.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 84315 |
| Deposited On: | 25 Feb 2012 05:31 |
| Last Modified: | 25 Feb 2012 05:31 |
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