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 / Acciarri, M., Adriani, O., Aguilar Benitez, M., Ahlen, S., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Banerjee, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 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

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;L. Lista;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
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
Measurement of W-pair cross sections in e(+)e(-) interactions at root s = 183 GeV and W-decay branching fractions / Acciarri, M., Adriani, O., Aguilar Benitez, M., Ahlen, S., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Banerjee, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 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/11588/478523
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