The process e(+)e(-) --> ngamma with n greater than or equal to 2 is studied at centre-of-mass energies ranging from roots = 192 to 209 GeV. The data sample corresponds to a total integrated luminosity of 427 pb(-1). The total and differential cross sections are found to be in agreement with the QED expectations. Using all the data collected with the L3 detector above the Z pole, limits on deviations from QED. excited electrons, contact interactions. extra space dimensions and excited spin-3/2 leptons are set. (C) 2002 Elsevier Science B.V. All rights reserved.

Study of multiphoton final states and tests of QED in e(+)e(-) collisions at root s up to 209 GeV / 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. - 531:(2002), pp. 28-38. [10.1016/S0370-2693(02)01339-4]

Study of multiphoton final states and tests of QED in e(+)e(-) collisions at root s up to 209 GeV

BAGNAIA, Paolo;GENTILE, Simonetta;GIAGU, Stefano;LUCI, Claudio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;
2002

Abstract

The process e(+)e(-) --> ngamma with n greater than or equal to 2 is studied at centre-of-mass energies ranging from roots = 192 to 209 GeV. The data sample corresponds to a total integrated luminosity of 427 pb(-1). The total and differential cross sections are found to be in agreement with the QED expectations. Using all the data collected with the L3 detector above the Z pole, limits on deviations from QED. excited electrons, contact interactions. extra space dimensions and excited spin-3/2 leptons are set. (C) 2002 Elsevier Science B.V. All rights reserved.
2002
01 Pubblicazione su rivista::01a Articolo in rivista
Study of multiphoton final states and tests of QED in e(+)e(-) collisions at root s up to 209 GeV / 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. - 531:(2002), pp. 28-38. [10.1016/S0370-2693(02)01339-4]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/248014
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