Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of root s = 188.7 GeV corresponds to an integrated luminosity of 176.4 pb(-1). Events with a single energetic lepton or two acoplanar hadronic jets are selected. Within phase-space cuts, the total cross-section is measured to be 0.53 +/- 0.12 +/- 0.03 pb, consistent with the Standard Model expectation. Including our single W boson results obtained at lower root s, the WW gamma gauge couplings kappa(gamma) and lambda(gamma) are determined to be kappa(gamma) = 0.93 +/- 0.16 +/- 0.09 and lambda(gamma) = -0.31(-0.19)(+0.68) +/- 0.13. (C) 2000 Elsevier Science B.V. All rights reserved.

Production of single W bosons at root s=189 GeV and measurement of WW gamma gauge couplings / Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., 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., Bajo, A., Baksay, L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 487:(2000), pp. 229-240. [10.1016/S0370-2693(00)00824-8]

Production of single W bosons at root s=189 GeV and measurement of WW gamma gauge couplings

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;L. Lista;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
2000

Abstract

Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of root s = 188.7 GeV corresponds to an integrated luminosity of 176.4 pb(-1). Events with a single energetic lepton or two acoplanar hadronic jets are selected. Within phase-space cuts, the total cross-section is measured to be 0.53 +/- 0.12 +/- 0.03 pb, consistent with the Standard Model expectation. Including our single W boson results obtained at lower root s, the WW gamma gauge couplings kappa(gamma) and lambda(gamma) are determined to be kappa(gamma) = 0.93 +/- 0.16 +/- 0.09 and lambda(gamma) = -0.31(-0.19)(+0.68) +/- 0.13. (C) 2000 Elsevier Science B.V. All rights reserved.
2000
Production of single W bosons at root s=189 GeV and measurement of WW gamma gauge couplings / Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., 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., Bajo, A., Baksay, L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 487:(2000), pp. 229-240. [10.1016/S0370-2693(00)00824-8]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/473650
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