The CP-conserving triple-gauge-boson couplings, gZ1 , κγ, λγ, gZ5 , κZ and λZ are measured using hadronic and semi-leptonic W-pair events selected in 629 pb-1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The results are combined with previous L3 measurements based on data collected at lower centre-of-mass energies and with the results from single-W production and from events with a single-photon and missing energy. Imposing the constraints κZ = gZ1 - tan2 θW(κγ- 1) and λZ = λγ, we obtain for the C and P conserving couplings the results: gZ1 = 0.966 ± 0.033(stat) ± 0.015(syst), κγ= 1.013 ± 0.066(stat) ± 0.026(syst), λγ=-0.021 ±0.035(stat) ±0.017(syst).

Measurement of triple-gauge-boson couplings of the W boson at LEP / Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.G., Anderhub, H., Andreev, V.P., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S.V., Banerjee, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 586:3-4(2004), pp. 151-166. [10.1016/j.physletb.2004.02.045]

Measurement of triple-gauge-boson couplings of the W boson at LEP

Aloisio A.;Biglietti M.;Chiefari G.;Giagu S.;Lista L.;Luci C.;Merola L.;Organtini G.;Patricelli S.;Sciacca C.;
2004

Abstract

The CP-conserving triple-gauge-boson couplings, gZ1 , κγ, λγ, gZ5 , κZ and λZ are measured using hadronic and semi-leptonic W-pair events selected in 629 pb-1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The results are combined with previous L3 measurements based on data collected at lower centre-of-mass energies and with the results from single-W production and from events with a single-photon and missing energy. Imposing the constraints κZ = gZ1 - tan2 θW(κγ- 1) and λZ = λγ, we obtain for the C and P conserving couplings the results: gZ1 = 0.966 ± 0.033(stat) ± 0.015(syst), κγ= 1.013 ± 0.066(stat) ± 0.026(syst), λγ=-0.021 ±0.035(stat) ±0.017(syst).
2004
Measurement of triple-gauge-boson couplings of the W boson at LEP / Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.G., Anderhub, H., Andreev, V.P., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S.V., Banerjee, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 586:3-4(2004), pp. 151-166. [10.1016/j.physletb.2004.02.045]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/959188
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