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: sigma(WW) = 16.53 +/- 0.67(stat.) +/- 0.26(syst.) pb. (C) 1998 Elsevier Science B.V, All rights reserved.

Measurement of W-pair cross sections in e(+)e(-) interactions at root s = 183 GeV and W-decay branching fractions / M., A., O., A., M., A.B., S., A., J., A., G., A., J., A., A., A., M. G., A., G., A., H., A., V. P., A., T., A., F., A., A., A., T., A., T., A., Bagnaia, P., L., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 436:(1998), pp. 437-452. [10.1016/S0370-2693(98)01036-3]

Measurement of W-pair cross sections in e(+)e(-) interactions at root s = 183 GeV and W-decay branching fractions

BAGNAIA, Paolo;FACCINI, Riccardo;GENTILE, Simonetta;GIAGU, Stefano;ORGANTINI, Giovanni;
1998

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: sigma(WW) = 16.53 +/- 0.67(stat.) +/- 0.26(syst.) pb. (C) 1998 Elsevier Science B.V, All rights reserved.
1998
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of W-pair cross sections in e(+)e(-) interactions at root s = 183 GeV and W-decay branching fractions / M., A., O., A., M., A.B., S., A., J., A., G., A., J., A., A., A., M. G., A., G., A., H., A., V. P., A., T., A., F., A., A., A., T., A., T., A., Bagnaia, P., L., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 436:(1998), pp. 437-452. [10.1016/S0370-2693(98)01036-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/472572
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