The cross section of the process e(+)e(-) --> Zgammagamma --> q (q) over bar gammagamma is measured with 215 pb(-1) of data collected with the L3 detector during the final LEP run at centre-of-mass energies around 205 GeV and 207 GeV No deviation from the Standard Model expectation is observed. The full data sample of 713 pb(-1), collected above the Z resonance, is used to constrain the coefficients of anomalous quartic gauge boson couplings to: -0.02 GeV-2 < a(0)/Lambda(2) < 0.03 GeV-2, -0.07 GeV-2 < a(c)/Lambda(2) < 0.05 GeV-2, at 95% confidence level. (C) 2002 Elsevier Science B.V. All rights reserved.

The e(+)e(-)-> Z gamma gamma -> q(q)over-bar gamma gamma reaction at LEP and constraints on anomalous quartic gauge boson couplings / Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., 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. - STAMPA. - 540:(2002), pp. 43-51. [10.1016/S0370-2693(02)02127-5]

The e(+)e(-)-> Z gamma gamma -> q(q)over-bar gamma gamma reaction at LEP and constraints on anomalous quartic gauge boson couplings

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;L. Lista;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
2002

Abstract

The cross section of the process e(+)e(-) --> Zgammagamma --> q (q) over bar gammagamma is measured with 215 pb(-1) of data collected with the L3 detector during the final LEP run at centre-of-mass energies around 205 GeV and 207 GeV No deviation from the Standard Model expectation is observed. The full data sample of 713 pb(-1), collected above the Z resonance, is used to constrain the coefficients of anomalous quartic gauge boson couplings to: -0.02 GeV-2 < a(0)/Lambda(2) < 0.03 GeV-2, -0.07 GeV-2 < a(c)/Lambda(2) < 0.05 GeV-2, at 95% confidence level. (C) 2002 Elsevier Science B.V. All rights reserved.
2002
The e(+)e(-)-> Z gamma gamma -> q(q)over-bar gamma gamma reaction at LEP and constraints on anomalous quartic gauge boson couplings / Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., 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. - STAMPA. - 540:(2002), pp. 43-51. [10.1016/S0370-2693(02)02127-5]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/469325
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